diff --git a/README.md b/README.md
index 6a89233..864a03a 100644
--- a/README.md
+++ b/README.md
@@ -4,9 +4,9 @@
 [![Wercker](http://img.shields.io/wercker/ci/55d0eeff7331453f0801982c.svg?style=flat-square)][wercker]
 [![MIT License](http://img.shields.io/badge/license-MIT-blue.svg?style=flat-square)][license]
 
-[release]: https://github.com/yudai/gotty/releases
+[release]: https://github.com/bigstack-oss/gotty/releases
 [wercker]: https://app.wercker.com/project/bykey/03b91f441bebeda34f80e09a9f14126f
-[license]: https://github.com/yudai/gotty/blob/master/LICENSE
+[license]: https://github.com/bigstack-oss/gotty/blob/master/LICENSE
 
 GoTTY is a simple command line tool that turns your CLI tools into web applications.
 
@@ -14,7 +14,7 @@ GoTTY is a simple command line tool that turns your CLI tools into web applicati
 
 # Installation
 
-Download the latest stable binary file from the [Releases](https://github.com/yudai/gotty/releases) page. Note that the release marked `Pre-release` is built for testing purpose, which can include unstable or breaking changes. Download a release marked [Latest release](https://github.com/yudai/gotty/releases/latest) for a stabale build.
+Download the latest stable binary file from the [Releases](https://github.com/bigstack-oss/gotty/releases) page. Note that the release marked `Pre-release` is built for testing purpose, which can include unstable or breaking changes. Download a release marked [Latest release](https://github.com/bigstack-oss/gotty/releases/latest) for a stabale build.
 
 (Files named with `darwin_amd64` are for Mac OS X users)
 
@@ -31,7 +31,7 @@ $ brew install yudai/gotty/gotty
 If you have a Go language environment, you can install GoTTY with the `go get` command. However, this command builds a binary file from the latest master branch, which can include unstable or breaking changes. GoTTY requires go1.9 or later.
 
 ```sh
-$ go get github.com/yudai/gotty
+$ go get github.com/bigstack-oss/gotty
 ```
 
 # Usage
@@ -94,7 +94,7 @@ preferences {
 }
 ```
 
-See the [`.gotty`](https://github.com/yudai/gotty/blob/master/.gotty) file in this repository for the list of configuration options.
+See the [`.gotty`](https://github.com/bigstack-oss/gotty/blob/master/.gotty) file in this repository for the list of configuration options.
 
 ### Security Options
 
diff --git a/backend/localcommand/factory.go b/backend/localcommand/factory.go
index 11810ed..46a70e3 100644
--- a/backend/localcommand/factory.go
+++ b/backend/localcommand/factory.go
@@ -4,7 +4,7 @@ import (
 	"syscall"
 	"time"
 
-	"github.com/yudai/gotty/server"
+	"github.com/bigstack-oss/gotty/server"
 )
 
 type Options struct {
diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..ec383e0
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,15 @@
+module github.com/bigstack-oss/gotty
+
+go 1.14
+
+require (
+	github.com/NYTimes/gziphandler v0.0.0-20170804200234-967539e5e271
+	github.com/elazarl/go-bindata-assetfs v0.0.0-20150813044622-d5cac425555c
+	github.com/fatih/structs v0.0.0-20150526064352-a9f7daa9c272
+	github.com/gorilla/websocket v0.0.0-20150811171432-b6ab76f1fe98
+	github.com/hashicorp/go-multierror v0.0.0-20150608033521-56912fb08d85 // indirect
+	github.com/kr/pty v0.0.0-20150511174710-5cf931ef8f76
+	github.com/pkg/errors v0.8.1-0.20161029093637-248dadf4e906
+	github.com/urfave/cli v1.22.15
+	github.com/yudai/hcl v0.0.0-20151013225006-5fa2393b3552
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..abf7edb
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,43 @@
+github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
+github.com/NYTimes/gziphandler v0.0.0-20170804200234-967539e5e271 h1:rEXtCtsQnEC8QeWYL2BpqmOuondcABYaKHux21ddDns=
+github.com/NYTimes/gziphandler v0.0.0-20170804200234-967539e5e271/go.mod h1:3wb06e3pkSAbeQ52E9H9iFoQsEEwGN64994WTCIhntQ=
+github.com/cpuguy83/go-md2man/v2 v2.0.4 h1:wfIWP927BUkWJb2NmU/kNDYIBTh/ziUX91+lVfRxZq4=
+github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/elazarl/go-bindata-assetfs v0.0.0-20150813044622-d5cac425555c h1:Knqh8y6EeTJQ3FZsqdRq7XfB7/RimWQjBtO4YRzUgcE=
+github.com/elazarl/go-bindata-assetfs v0.0.0-20150813044622-d5cac425555c/go.mod h1:v+YaWX3bdea5J/mo8dSETolEo7R71Vk1u8bnjau5yw4=
+github.com/fatih/structs v0.0.0-20150526064352-a9f7daa9c272 h1:0fRL8zAP1oZiyz+nKKlJsW7yAIHeIjMOCr4fmGximHk=
+github.com/fatih/structs v0.0.0-20150526064352-a9f7daa9c272/go.mod h1:9NiDSp5zOcgEDl+j00MP/WkGVPOlPRLejGD8Ga6PJ7M=
+github.com/gorilla/websocket v0.0.0-20150811171432-b6ab76f1fe98 h1:VQR6w4PocLvhbzu1AtDRjW0RXe1gntyKTX2JYYX28kI=
+github.com/gorilla/websocket v0.0.0-20150811171432-b6ab76f1fe98/go.mod h1:E7qHFY5m1UJ88s3WnNqhKjPHQ0heANvMoAMk2YaljkQ=
+github.com/hashicorp/go-multierror v0.0.0-20150608033521-56912fb08d85 h1:cUIqw6AGGDeIa1KYdG1mLl/bX+WGDbvZJ+dhb2tprxo=
+github.com/hashicorp/go-multierror v0.0.0-20150608033521-56912fb08d85/go.mod h1:JMRHfdO9jKNzS/+BTlxCjKNQHg/jZAft8U7LloJvN7I=
+github.com/kr/pty v0.0.0-20150511174710-5cf931ef8f76 h1:i5TIRQpbCg4aJMUtVHIhkQnSw++Z405Z5pzqHqeNkdU=
+github.com/kr/pty v0.0.0-20150511174710-5cf931ef8f76/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
+github.com/pkg/errors v0.8.1-0.20161029093637-248dadf4e906 h1:BKfCEBHnHoXswNe0Btj/zOfiyn40z6qOti8SeLbQgdM=
+github.com/pkg/errors v0.8.1-0.20161029093637-248dadf4e906/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk=
+github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
+github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/urfave/cli v1.22.15 h1:nuqt+pdC/KqswQKhETJjo7pvn/k4xMUxgW6liI7XpnM=
+github.com/urfave/cli v1.22.15/go.mod h1:wSan1hmo5zeyLGBjRJbzRTNk8gwoYa2B9n4q9dmRIc0=
+github.com/yudai/hcl v0.0.0-20151013225006-5fa2393b3552 h1:tjsK9T2IA3d2FFNxzDP7AJf+EXhyuPd7PB4Z2HrtAoc=
+github.com/yudai/hcl v0.0.0-20151013225006-5fa2393b3552/go.mod h1:hg0ZaCmQL3rze1cH8Fh2g0a9q8vQs0uN8ESpePEwSEw=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/js/dist/gotty-bundle.js b/js/dist/gotty-bundle.js
index b95cbae..ce6863d 100644
--- a/js/dist/gotty-bundle.js
+++ b/js/dist/gotty-bundle.js
@@ -85,4 +85,4 @@ if(void 0!==i)throw new Error('Global "lib" object already exists.');var i={};i.
  * @module xterm/addons/terminado/terminado
  * @license MIT
  */
-!function(t){e.exports=t(r(0))}(function(e){"use strict";var t={};return t.terminadoAttach=function(e,t,r,i){r=void 0===r||r,e.socket=t,e._flushBuffer=function(){e.write(e._attachSocketBuffer),e._attachSocketBuffer=null,clearTimeout(e._attachSocketBufferTimer),e._attachSocketBufferTimer=null},e._pushToBuffer=function(t){e._attachSocketBuffer?e._attachSocketBuffer+=t:(e._attachSocketBuffer=t,setTimeout(e._flushBuffer,10))},e._getMessage=function(t){var r=JSON.parse(t.data);"stdout"==r[0]&&(i?e._pushToBuffer(r[1]):e.write(r[1]))},e._sendData=function(e){t.send(JSON.stringify(["stdin",e]))},e._setSize=function(e){t.send(JSON.stringify(["set_size",e.rows,e.cols]))},t.addEventListener("message",e._getMessage),r&&e.on("data",e._sendData),e.on("resize",e._setSize),t.addEventListener("close",e.terminadoDetach.bind(e,t)),t.addEventListener("error",e.terminadoDetach.bind(e,t))},t.terminadoDetach=function(e,t){e.off("data",e._sendData),(t=void 0===t?e.socket:t)&&t.removeEventListener("message",e._getMessage),delete e.socket},e.prototype.terminadoAttach=function(e,r,i){return t.terminadoAttach(this,e,r,i)},e.prototype.terminadoDetach=function(e){return t.terminadoDetach(this,e)},t})},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=r(27),o="undefined"==typeof navigator,s=o?"node":navigator.userAgent,n=o?"node":navigator.platform;t.isFirefox=!!~s.indexOf("Firefox"),t.isMSIE=!!~s.indexOf("MSIE")||!!~s.indexOf("Trident"),t.isMac=i.contains(["Macintosh","MacIntel","MacPPC","Mac68K"],n),t.isIpad="iPad"===n,t.isIphone="iPhone"===n,t.isMSWindows=i.contains(["Windows","Win16","Win32","WinCE"],n),t.isLinux=n.indexOf("Linux")>=0},function(e,t,r){"use strict";function i(e,t){if(null==e.pageX)return null;for(var r=e.pageX,i=e.pageY;t&&t!==self.document.documentElement;)r-=t.offsetLeft,i-=t.offsetTop,t="offsetParent"in t?t.offsetParent:t.parentElement;return[r,i]}function o(e,t,r,o,s,n){var a=i(e,t);return a[0]=Math.ceil((a[0]+(n?r.width/2:0))/r.width),a[1]=Math.ceil(a[1]/r.height),a[0]=Math.min(Math.max(a[0],1),o+1),a[1]=Math.min(Math.max(a[1],1),s+1),a}Object.defineProperty(t,"__esModule",{value:!0}),t.getCoordsRelativeToElement=i,t.getCoords=o,t.getRawByteCoords=function(e,t,r,i,s){var n=o(e,t,r,i,s),a=n[0],l=n[1];return a+=32,l+=32,{x:a,y:l}}},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=r(3),o=function(){function e(e){this.elem=e,i.hterm.defaultStorage=new i.lib.Storage.Memory,this.term=new i.hterm.Terminal,this.term.getPrefs().set("send-encoding","raw"),this.term.decorate(this.elem),this.io=this.term.io.push(),this.term.installKeyboard()}return e.prototype.info=function(){return{columns:this.columns,rows:this.rows}},e.prototype.output=function(e){null!=this.term.io&&this.term.io.writeUTF8(e)},e.prototype.showMessage=function(e,t){this.message=e,t>0?this.term.io.showOverlay(e,t):this.term.io.showOverlay(e,null)},e.prototype.removeMessage=function(){this.term.io.showOverlay(this.message,0)},e.prototype.setWindowTitle=function(e){this.term.setWindowTitle(e)},e.prototype.setPreferences=function(e){var t=this;Object.keys(e).forEach(function(r){t.term.getPrefs().set(r,e[r])})},e.prototype.onInput=function(e){this.io.onVTKeystroke=function(t){e(t)},this.io.sendString=function(t){e(t)}},e.prototype.onResize=function(e){var t=this;this.io.onTerminalResize=function(r,i){t.columns=r,t.rows=i,e(r,i)}},e.prototype.deactivate=function(){this.io.onVTKeystroke=null,this.io.sendString=null,this.io.onTerminalResize=null,this.term.uninstallKeyboard()},e.prototype.reset=function(){this.removeMessage(),this.term.installKeyboard()},e.prototype.close=function(){this.term.uninstallKeyboard()},e}();t.Hterm=o},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=function(){function e(e,t){this.url=e,this.protocols=t}return e.prototype.create=function(){return new o(this.url,this.protocols)},e}();t.ConnectionFactory=i;var o=function(){function e(e,t){this.bare=new WebSocket(e,t)}return e.prototype.open=function(){},e.prototype.close=function(){this.bare.close()},e.prototype.send=function(e){this.bare.send(e)},e.prototype.isOpen=function(){return this.bare.readyState==WebSocket.CONNECTING||this.bare.readyState==WebSocket.OPEN},e.prototype.onOpen=function(e){this.bare.onopen=function(t){e()}},e.prototype.onReceive=function(e){this.bare.onmessage=function(t){e(t.data)}},e.prototype.onClose=function(e){this.bare.onclose=function(t){e()}},e}();t.Connection=o},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0}),t.protocols=["webtty"],t.msgInputUnknown="0",t.msgInput="1",t.msgPing="2",t.msgResizeTerminal="3",t.msgUnknownOutput="0",t.msgOutput="1",t.msgPong="2",t.msgSetWindowTitle="3",t.msgSetPreferences="4",t.msgSetReconnect="5";var i=function(){function e(e,t,r,i){this.term=e,this.connectionFactory=t,this.args=r,this.authToken=i,this.reconnect=-1}return e.prototype.open=function(){var e,r,i=this,o=this.connectionFactory.create(),s=function(){o.onOpen(function(){var r=i.term.info();o.send(JSON.stringify({Arguments:i.args,AuthToken:i.authToken}));var s=function(e,r){o.send(t.msgResizeTerminal+JSON.stringify({columns:e,rows:r}))};i.term.onResize(s),s(r.columns,r.rows),i.term.onInput(function(e){o.send(t.msgInput+e)}),e=setInterval(function(){o.send(t.msgPing)},3e4)}),o.onReceive(function(e){var r=e.slice(1);switch(e[0]){case t.msgOutput:i.term.output(atob(r));break;case t.msgPong:break;case t.msgSetWindowTitle:i.term.setWindowTitle(r);break;case t.msgSetPreferences:var o=JSON.parse(r);i.term.setPreferences(o);break;case t.msgSetReconnect:var s=JSON.parse(r);console.log("Enabling reconnect: "+s+" seconds"),i.reconnect=s}}),o.onClose(function(){clearInterval(e),i.term.deactivate(),i.term.showMessage("Connection Closed",0),i.reconnect>0&&(r=setTimeout(function(){o=i.connectionFactory.create(),i.term.reset(),s()},1e3*i.reconnect))}),o.open()};return s(),function(){clearTimeout(r),o.close()}},e}();t.WebTTY=i},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=r(0),o=r(3);i.loadAddon("fit");var s=function(){function e(e){var t=this;this.elem=e,this.term=new i,this.message=e.ownerDocument.createElement("div"),this.message.className="xterm-overlay",this.messageTimeout=2e3,this.resizeListener=function(){t.term.fit(),t.term.scrollToBottom(),t.showMessage(String(t.term.cols)+"x"+String(t.term.rows),t.messageTimeout)},this.term.on("open",function(){t.resizeListener(),window.addEventListener("resize",function(){t.resizeListener()})}),this.term.open(e,!0),this.decoder=new o.lib.UTF8Decoder}return e.prototype.info=function(){return{columns:this.term.cols,rows:this.term.rows}},e.prototype.output=function(e){this.term.write(this.decoder.decode(e))},e.prototype.showMessage=function(e,t){var r=this;this.message.textContent=e,this.elem.appendChild(this.message),this.messageTimer&&clearTimeout(this.messageTimer),t>0&&(this.messageTimer=setTimeout(function(){r.elem.removeChild(r.message)},t))},e.prototype.removeMessage=function(){this.message.parentNode==this.elem&&this.elem.removeChild(this.message)},e.prototype.setWindowTitle=function(e){document.title=e},e.prototype.setPreferences=function(e){},e.prototype.onInput=function(e){this.term.on("data",function(t){e(t)})},e.prototype.onResize=function(e){this.term.on("resize",function(t){e(t.cols,t.rows)})},e.prototype.deactivate=function(){this.term.off("data"),this.term.off("resize"),this.term.blur()},e.prototype.reset=function(){this.removeMessage(),this.term.clear()},e.prototype.close=function(){window.removeEventListener("resize",this.resizeListener),this.term.destroy()},e}();t.Xterm=s},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=function(){function e(e,t,r){this.textarea=e,this.compositionView=t,this.terminal=r,this.isComposing=!1,this.isSendingComposition=!1,this.compositionPosition={start:null,end:null}}return e.prototype.compositionstart=function(){this.isComposing=!0,this.compositionPosition.start=this.textarea.value.length,this.compositionView.textContent="",this.compositionView.classList.add("active")},e.prototype.compositionupdate=function(e){var t=this;this.compositionView.textContent=e.data,this.updateCompositionElements(),setTimeout(function(){t.compositionPosition.end=t.textarea.value.length},0)},e.prototype.compositionend=function(){this.finalizeComposition(!0)},e.prototype.keydown=function(e){if(this.isComposing||this.isSendingComposition){if(229===e.keyCode)return!1;if(16===e.keyCode||17===e.keyCode||18===e.keyCode)return!1;this.finalizeComposition(!1)}return 229!==e.keyCode||(this.handleAnyTextareaChanges(),!1)},e.prototype.finalizeComposition=function(e){var t=this;if(this.compositionView.classList.remove("active"),this.isComposing=!1,this.clearTextareaPosition(),e){var r={start:this.compositionPosition.start,end:this.compositionPosition.end};this.isSendingComposition=!0,setTimeout(function(){if(t.isSendingComposition){t.isSendingComposition=!1;var e=void 0;e=t.isComposing?t.textarea.value.substring(r.start,r.end):t.textarea.value.substring(r.start),t.terminal.handler(e)}},0)}else{this.isSendingComposition=!1;var i=this.textarea.value.substring(this.compositionPosition.start,this.compositionPosition.end);this.terminal.handler(i)}},e.prototype.handleAnyTextareaChanges=function(){var e=this,t=this.textarea.value;setTimeout(function(){if(!e.isComposing){var r=e.textarea.value.replace(t,"");r.length>0&&e.terminal.handler(r)}},0)},e.prototype.updateCompositionElements=function(e){var t=this;if(this.isComposing){var r=this.terminal.element.querySelector(".terminal-cursor");if(r){var i=this.terminal.element.querySelector(".xterm-rows").offsetTop+r.offsetTop;this.compositionView.style.left=r.offsetLeft+"px",this.compositionView.style.top=i+"px",this.compositionView.style.height=r.offsetHeight+"px",this.compositionView.style.lineHeight=r.offsetHeight+"px";var o=this.compositionView.getBoundingClientRect();this.textarea.style.left=r.offsetLeft+"px",this.textarea.style.top=i+"px",this.textarea.style.width=o.width+"px",this.textarea.style.height=o.height+"px",this.textarea.style.lineHeight=o.height+"px"}e||setTimeout(function(){return t.updateCompositionElements(!0)},0)}},e.prototype.clearTextareaPosition=function(){this.textarea.style.left="",this.textarea.style.top=""},e}();t.CompositionHelper=i},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=r(2),o=r(4),s=function(){function e(e){this._terminal=e}return e.prototype.addChar=function(e,t){if(e>=" "){var r=n(t);this._terminal.charset&&this._terminal.charset[e]&&(e=this._terminal.charset[e]);var i=this._terminal.y+this._terminal.ybase;if(!r&&this._terminal.x)return void(this._terminal.lines.get(i)[this._terminal.x-1]&&(this._terminal.lines.get(i)[this._terminal.x-1][2]?this._terminal.lines.get(i)[this._terminal.x-1][1]+=e:this._terminal.lines.get(i)[this._terminal.x-2]&&(this._terminal.lines.get(i)[this._terminal.x-2][1]+=e),this._terminal.updateRange(this._terminal.y)));if(this._terminal.x+r-1>=this._terminal.cols)if(this._terminal.wraparoundMode)this._terminal.x=0,++this._terminal.y>this._terminal.scrollBottom?(this._terminal.y--,this._terminal.scroll(!0)):this._terminal.lines.get(this._terminal.y).isWrapped=!0;else if(2===r)return;if(i=this._terminal.y+this._terminal.ybase,this._terminal.insertMode)for(var o=0;o<r;++o)0===this._terminal.lines.get(this._terminal.y+this._terminal.ybase).pop()[2]&&this._terminal.lines.get(i)[this._terminal.cols-2]&&2===this._terminal.lines.get(i)[this._terminal.cols-2][2]&&(this._terminal.lines.get(i)[this._terminal.cols-2]=[this._terminal.curAttr," ",1]),this._terminal.lines.get(i).splice(this._terminal.x,0,[this._terminal.curAttr," ",1]);this._terminal.lines.get(i)[this._terminal.x]=[this._terminal.curAttr,e,r],this._terminal.x++,this._terminal.updateRange(this._terminal.y),2===r&&(this._terminal.lines.get(i)[this._terminal.x]=[this._terminal.curAttr,"",0],this._terminal.x++)}},e.prototype.bell=function(){var e=this;this._terminal.visualBell&&(this._terminal.element.style.borderColor="white",setTimeout(function(){return e._terminal.element.style.borderColor=""},10),this._terminal.popOnBell&&this._terminal.focus())},e.prototype.lineFeed=function(){this._terminal.convertEol&&(this._terminal.x=0),++this._terminal.y>this._terminal.scrollBottom&&(this._terminal.y--,this._terminal.scroll()),this._terminal.x>=this._terminal.cols&&this._terminal.x--},e.prototype.carriageReturn=function(){this._terminal.x=0},e.prototype.backspace=function(){this._terminal.x>0&&this._terminal.x--},e.prototype.tab=function(){this._terminal.x=this._terminal.nextStop()},e.prototype.shiftOut=function(){this._terminal.setgLevel(1)},e.prototype.shiftIn=function(){this._terminal.setgLevel(0)},e.prototype.insertChars=function(e){var t,r,i,o;for((t=e[0])<1&&(t=1),r=this._terminal.y+this._terminal.ybase,i=this._terminal.x,o=[this._terminal.eraseAttr()," ",1];t--&&i<this._terminal.cols;)this._terminal.lines.get(r).splice(i++,0,o),this._terminal.lines.get(r).pop()},e.prototype.cursorUp=function(e){var t=e[0];t<1&&(t=1),this._terminal.y-=t,this._terminal.y<0&&(this._terminal.y=0)},e.prototype.cursorDown=function(e){var t=e[0];t<1&&(t=1),this._terminal.y+=t,this._terminal.y>=this._terminal.rows&&(this._terminal.y=this._terminal.rows-1),this._terminal.x>=this._terminal.cols&&this._terminal.x--},e.prototype.cursorForward=function(e){var t=e[0];t<1&&(t=1),this._terminal.x+=t,this._terminal.x>=this._terminal.cols&&(this._terminal.x=this._terminal.cols-1)},e.prototype.cursorBackward=function(e){var t=e[0];t<1&&(t=1),this._terminal.x>=this._terminal.cols&&this._terminal.x--,this._terminal.x-=t,this._terminal.x<0&&(this._terminal.x=0)},e.prototype.cursorNextLine=function(e){var t=e[0];t<1&&(t=1),this._terminal.y+=t,this._terminal.y>=this._terminal.rows&&(this._terminal.y=this._terminal.rows-1),this._terminal.x=0},e.prototype.cursorPrecedingLine=function(e){var t=e[0];t<1&&(t=1),this._terminal.y-=t,this._terminal.y<0&&(this._terminal.y=0),this._terminal.x=0},e.prototype.cursorCharAbsolute=function(e){var t=e[0];t<1&&(t=1),this._terminal.x=t-1},e.prototype.cursorPosition=function(e){var t,r;t=e[0]-1,r=e.length>=2?e[1]-1:0,t<0?t=0:t>=this._terminal.rows&&(t=this._terminal.rows-1),r<0?r=0:r>=this._terminal.cols&&(r=this._terminal.cols-1),this._terminal.x=r,this._terminal.y=t},e.prototype.cursorForwardTab=function(e){for(var t=e[0]||1;t--;)this._terminal.x=this._terminal.nextStop()},e.prototype.eraseInDisplay=function(e){var t;switch(e[0]){case 0:for(this._terminal.eraseRight(this._terminal.x,this._terminal.y),t=this._terminal.y+1;t<this._terminal.rows;t++)this._terminal.eraseLine(t);break;case 1:for(this._terminal.eraseLeft(this._terminal.x,this._terminal.y),t=this._terminal.y;t--;)this._terminal.eraseLine(t);break;case 2:for(t=this._terminal.rows;t--;)this._terminal.eraseLine(t);break;case 3:var r=this._terminal.lines.length-this._terminal.rows;r>0&&(this._terminal.lines.trimStart(r),this._terminal.ybase=Math.max(this._terminal.ybase-r,0),this._terminal.ydisp=Math.max(this._terminal.ydisp-r,0))}},e.prototype.eraseInLine=function(e){switch(e[0]){case 0:this._terminal.eraseRight(this._terminal.x,this._terminal.y);break;case 1:this._terminal.eraseLeft(this._terminal.x,this._terminal.y);break;case 2:this._terminal.eraseLine(this._terminal.y)}},e.prototype.insertLines=function(e){var t,r,i;for((t=e[0])<1&&(t=1),r=this._terminal.y+this._terminal.ybase,i=this._terminal.rows-1-this._terminal.scrollBottom,i=this._terminal.rows-1+this._terminal.ybase-i+1;t--;)this._terminal.lines.length===this._terminal.lines.maxLength&&(this._terminal.lines.trimStart(1),this._terminal.ybase--,this._terminal.ydisp--,r--,i--),this._terminal.lines.splice(r,0,this._terminal.blankLine(!0)),this._terminal.lines.splice(i,1);this._terminal.updateRange(this._terminal.y),this._terminal.updateRange(this._terminal.scrollBottom)},e.prototype.deleteLines=function(e){var t,r,i;for((t=e[0])<1&&(t=1),r=this._terminal.y+this._terminal.ybase,i=this._terminal.rows-1-this._terminal.scrollBottom,i=this._terminal.rows-1+this._terminal.ybase-i;t--;)this._terminal.lines.length===this._terminal.lines.maxLength&&(this._terminal.lines.trimStart(1),this._terminal.ybase-=1,this._terminal.ydisp-=1),this._terminal.lines.splice(i+1,0,this._terminal.blankLine(!0)),this._terminal.lines.splice(r,1);this._terminal.updateRange(this._terminal.y),this._terminal.updateRange(this._terminal.scrollBottom)},e.prototype.deleteChars=function(e){var t,r,i;for((t=e[0])<1&&(t=1),r=this._terminal.y+this._terminal.ybase,i=[this._terminal.eraseAttr()," ",1];t--;)this._terminal.lines.get(r).splice(this._terminal.x,1),this._terminal.lines.get(r).push(i)},e.prototype.scrollUp=function(e){for(var t=e[0]||1;t--;)this._terminal.lines.splice(this._terminal.ybase+this._terminal.scrollTop,1),this._terminal.lines.splice(this._terminal.ybase+this._terminal.scrollBottom,0,this._terminal.blankLine());this._terminal.updateRange(this._terminal.scrollTop),this._terminal.updateRange(this._terminal.scrollBottom)},e.prototype.scrollDown=function(e){for(var t=e[0]||1;t--;)this._terminal.lines.splice(this._terminal.ybase+this._terminal.scrollBottom,1),this._terminal.lines.splice(this._terminal.ybase+this._terminal.scrollTop,0,this._terminal.blankLine());this._terminal.updateRange(this._terminal.scrollTop),this._terminal.updateRange(this._terminal.scrollBottom)},e.prototype.eraseChars=function(e){var t,r,i,o;for((t=e[0])<1&&(t=1),r=this._terminal.y+this._terminal.ybase,i=this._terminal.x,o=[this._terminal.eraseAttr()," ",1];t--&&i<this._terminal.cols;)this._terminal.lines.get(r)[i++]=o},e.prototype.cursorBackwardTab=function(e){for(var t=e[0]||1;t--;)this._terminal.x=this._terminal.prevStop()},e.prototype.charPosAbsolute=function(e){var t=e[0];t<1&&(t=1),this._terminal.x=t-1,this._terminal.x>=this._terminal.cols&&(this._terminal.x=this._terminal.cols-1)},e.prototype.HPositionRelative=function(e){var t=e[0];t<1&&(t=1),this._terminal.x+=t,this._terminal.x>=this._terminal.cols&&(this._terminal.x=this._terminal.cols-1)},e.prototype.repeatPrecedingCharacter=function(e){for(var t=e[0]||1,r=this._terminal.lines.get(this._terminal.ybase+this._terminal.y),i=r[this._terminal.x-1]||[this._terminal.defAttr," ",1];t--;)r[this._terminal.x++]=i},e.prototype.sendDeviceAttributes=function(e){e[0]>0||(this._terminal.prefix?">"===this._terminal.prefix&&(this._terminal.is("xterm")?this._terminal.send(i.C0.ESC+"[>0;276;0c"):this._terminal.is("rxvt-unicode")?this._terminal.send(i.C0.ESC+"[>85;95;0c"):this._terminal.is("linux")?this._terminal.send(e[0]+"c"):this._terminal.is("screen")&&this._terminal.send(i.C0.ESC+"[>83;40003;0c")):this._terminal.is("xterm")||this._terminal.is("rxvt-unicode")||this._terminal.is("screen")?this._terminal.send(i.C0.ESC+"[?1;2c"):this._terminal.is("linux")&&this._terminal.send(i.C0.ESC+"[?6c"))},e.prototype.linePosAbsolute=function(e){var t=e[0];t<1&&(t=1),this._terminal.y=t-1,this._terminal.y>=this._terminal.rows&&(this._terminal.y=this._terminal.rows-1)},e.prototype.VPositionRelative=function(e){var t=e[0];t<1&&(t=1),this._terminal.y+=t,this._terminal.y>=this._terminal.rows&&(this._terminal.y=this._terminal.rows-1),this._terminal.x>=this._terminal.cols&&this._terminal.x--},e.prototype.HVPosition=function(e){e[0]<1&&(e[0]=1),e[1]<1&&(e[1]=1),this._terminal.y=e[0]-1,this._terminal.y>=this._terminal.rows&&(this._terminal.y=this._terminal.rows-1),this._terminal.x=e[1]-1,this._terminal.x>=this._terminal.cols&&(this._terminal.x=this._terminal.cols-1)},e.prototype.tabClear=function(e){var t=e[0];t<=0?delete this._terminal.tabs[this._terminal.x]:3===t&&(this._terminal.tabs={})},e.prototype.setMode=function(e){if(e.length>1)for(var t=0;t<e.length;t++)this.setMode([e[t]]);else if(this._terminal.prefix){if("?"===this._terminal.prefix)switch(e[0]){case 1:this._terminal.applicationCursor=!0;break;case 2:this._terminal.setgCharset(0,o.DEFAULT_CHARSET),this._terminal.setgCharset(1,o.DEFAULT_CHARSET),this._terminal.setgCharset(2,o.DEFAULT_CHARSET),this._terminal.setgCharset(3,o.DEFAULT_CHARSET);break;case 3:this._terminal.savedCols=this._terminal.cols,this._terminal.resize(132,this._terminal.rows);break;case 6:this._terminal.originMode=!0;break;case 7:this._terminal.wraparoundMode=!0;break;case 12:break;case 66:this._terminal.log("Serial port requested application keypad."),this._terminal.applicationKeypad=!0,this._terminal.viewport.syncScrollArea();break;case 9:case 1e3:case 1002:case 1003:this._terminal.x10Mouse=9===e[0],this._terminal.vt200Mouse=1e3===e[0],this._terminal.normalMouse=e[0]>1e3,this._terminal.mouseEvents=!0,this._terminal.element.classList.add("enable-mouse-events"),this._terminal.selectionManager.disable(),this._terminal.log("Binding to mouse events.");break;case 1004:this._terminal.sendFocus=!0;break;case 1005:this._terminal.utfMouse=!0;break;case 1006:this._terminal.sgrMouse=!0;break;case 1015:this._terminal.urxvtMouse=!0;break;case 25:this._terminal.cursorHidden=!1;break;case 1049:case 47:case 1047:if(!this._terminal.normal){var r={lines:this._terminal.lines,ybase:this._terminal.ybase,ydisp:this._terminal.ydisp,x:this._terminal.x,y:this._terminal.y,scrollTop:this._terminal.scrollTop,scrollBottom:this._terminal.scrollBottom,tabs:this._terminal.tabs};this._terminal.reset(),this._terminal.viewport.syncScrollArea(),this._terminal.normal=r,this._terminal.showCursor()}}}else switch(e[0]){case 4:this._terminal.insertMode=!0}},e.prototype.resetMode=function(e){if(e.length>1)for(var t=0;t<e.length;t++)this.resetMode([e[t]]);else if(this._terminal.prefix){if("?"===this._terminal.prefix)switch(e[0]){case 1:this._terminal.applicationCursor=!1;break;case 3:132===this._terminal.cols&&this._terminal.savedCols&&this._terminal.resize(this._terminal.savedCols,this._terminal.rows),delete this._terminal.savedCols;break;case 6:this._terminal.originMode=!1;break;case 7:this._terminal.wraparoundMode=!1;break;case 12:break;case 66:this._terminal.log("Switching back to normal keypad."),this._terminal.applicationKeypad=!1,this._terminal.viewport.syncScrollArea();break;case 9:case 1e3:case 1002:case 1003:this._terminal.x10Mouse=!1,this._terminal.vt200Mouse=!1,this._terminal.normalMouse=!1,this._terminal.mouseEvents=!1,this._terminal.element.classList.remove("enable-mouse-events"),this._terminal.selectionManager.enable();break;case 1004:this._terminal.sendFocus=!1;break;case 1005:this._terminal.utfMouse=!1;break;case 1006:this._terminal.sgrMouse=!1;break;case 1015:this._terminal.urxvtMouse=!1;break;case 25:this._terminal.cursorHidden=!0;break;case 1049:case 47:case 1047:this._terminal.normal&&(this._terminal.lines=this._terminal.normal.lines,this._terminal.ybase=this._terminal.normal.ybase,this._terminal.ydisp=this._terminal.normal.ydisp,this._terminal.x=this._terminal.normal.x,this._terminal.y=this._terminal.normal.y,this._terminal.scrollTop=this._terminal.normal.scrollTop,this._terminal.scrollBottom=this._terminal.normal.scrollBottom,this._terminal.tabs=this._terminal.normal.tabs,this._terminal.normal=null,this._terminal.selectionManager.setBuffer(this._terminal.lines),this._terminal.refresh(0,this._terminal.rows-1),this._terminal.viewport.syncScrollArea(),this._terminal.showCursor())}}else switch(e[0]){case 4:this._terminal.insertMode=!1}},e.prototype.charAttributes=function(e){if(1!==e.length||0!==e[0]){for(var t,r=e.length,i=0,o=this._terminal.curAttr>>18,s=this._terminal.curAttr>>9&511,n=511&this._terminal.curAttr;i<r;i++)(t=e[i])>=30&&t<=37?s=t-30:t>=40&&t<=47?n=t-40:t>=90&&t<=97?s=(t+=8)-90:t>=100&&t<=107?n=(t+=8)-100:0===t?(o=this._terminal.defAttr>>18,s=this._terminal.defAttr>>9&511,n=511&this._terminal.defAttr):1===t?o|=1:4===t?o|=2:5===t?o|=4:7===t?o|=8:8===t?o|=16:22===t?o&=-2:24===t?o&=-3:25===t?o&=-5:27===t?o&=-9:28===t?o&=-17:39===t?s=this._terminal.defAttr>>9&511:49===t?n=511&this._terminal.defAttr:38===t?2===e[i+1]?(i+=2,-1===(s=this._terminal.matchColor(255&e[i],255&e[i+1],255&e[i+2]))&&(s=511),i+=2):5===e[i+1]&&(s=t=255&e[i+=2]):48===t?2===e[i+1]?(i+=2,-1===(n=this._terminal.matchColor(255&e[i],255&e[i+1],255&e[i+2]))&&(n=511),i+=2):5===e[i+1]&&(n=t=255&e[i+=2]):100===t?(s=this._terminal.defAttr>>9&511,n=511&this._terminal.defAttr):this._terminal.error("Unknown SGR attribute: %d.",t);this._terminal.curAttr=o<<18|s<<9|n}else this._terminal.curAttr=this._terminal.defAttr},e.prototype.deviceStatus=function(e){if(this._terminal.prefix){if("?"===this._terminal.prefix)switch(e[0]){case 6:this._terminal.send(i.C0.ESC+"[?"+(this._terminal.y+1)+";"+(this._terminal.x+1)+"R")}}else switch(e[0]){case 5:this._terminal.send(i.C0.ESC+"[0n");break;case 6:this._terminal.send(i.C0.ESC+"["+(this._terminal.y+1)+";"+(this._terminal.x+1)+"R")}},e.prototype.softReset=function(e){this._terminal.cursorHidden=!1,this._terminal.insertMode=!1,this._terminal.originMode=!1,this._terminal.wraparoundMode=!0,this._terminal.applicationKeypad=!1,this._terminal.viewport.syncScrollArea(),this._terminal.applicationCursor=!1,this._terminal.scrollTop=0,this._terminal.scrollBottom=this._terminal.rows-1,this._terminal.curAttr=this._terminal.defAttr,this._terminal.x=this._terminal.y=0,this._terminal.charset=null,this._terminal.glevel=0,this._terminal.charsets=[null]},e.prototype.setCursorStyle=function(e){var t=e[0]<1?1:e[0];switch(t){case 1:case 2:this._terminal.setOption("cursorStyle","block");break;case 3:case 4:this._terminal.setOption("cursorStyle","underline");break;case 5:case 6:this._terminal.setOption("cursorStyle","bar")}var r=t%2==1;this._terminal.setOption("cursorBlink",r)},e.prototype.setScrollRegion=function(e){this._terminal.prefix||(this._terminal.scrollTop=(e[0]||1)-1,this._terminal.scrollBottom=(e[1]&&e[1]<=this._terminal.rows?e[1]:this._terminal.rows)-1,this._terminal.x=0,this._terminal.y=0)},e.prototype.saveCursor=function(e){this._terminal.savedX=this._terminal.x,this._terminal.savedY=this._terminal.y},e.prototype.restoreCursor=function(e){this._terminal.x=this._terminal.savedX||0,this._terminal.y=this._terminal.savedY||0},e}();t.InputHandler=s;var n=function(e){function t(e){var t,r=0,o=i.length-1;if(e<i[0][0]||e>i[o][1])return!1;for(;o>=r;)if(t=Math.floor((r+o)/2),e>i[t][1])r=t+1;else{if(!(e<i[t][0]))return!0;o=t-1}return!1}function r(e){return e>=4352&&(e<=4447||9001===e||9002===e||e>=11904&&e<=42191&&12351!==e||e>=44032&&e<=55203||e>=63744&&e<=64255||e>=65040&&e<=65049||e>=65072&&e<=65135||e>=65280&&e<=65376||e>=65504&&e<=65510||e>=131072&&e<=196605||e>=196608&&e<=262141)}var i=[[768,879],[1155,1158],[1160,1161],[1425,1469],[1471,1471],[1473,1474],[1476,1477],[1479,1479],[1536,1539],[1552,1557],[1611,1630],[1648,1648],[1750,1764],[1767,1768],[1770,1773],[1807,1807],[1809,1809],[1840,1866],[1958,1968],[2027,2035],[2305,2306],[2364,2364],[2369,2376],[2381,2381],[2385,2388],[2402,2403],[2433,2433],[2492,2492],[2497,2500],[2509,2509],[2530,2531],[2561,2562],[2620,2620],[2625,2626],[2631,2632],[2635,2637],[2672,2673],[2689,2690],[2748,2748],[2753,2757],[2759,2760],[2765,2765],[2786,2787],[2817,2817],[2876,2876],[2879,2879],[2881,2883],[2893,2893],[2902,2902],[2946,2946],[3008,3008],[3021,3021],[3134,3136],[3142,3144],[3146,3149],[3157,3158],[3260,3260],[3263,3263],[3270,3270],[3276,3277],[3298,3299],[3393,3395],[3405,3405],[3530,3530],[3538,3540],[3542,3542],[3633,3633],[3636,3642],[3655,3662],[3761,3761],[3764,3769],[3771,3772],[3784,3789],[3864,3865],[3893,3893],[3895,3895],[3897,3897],[3953,3966],[3968,3972],[3974,3975],[3984,3991],[3993,4028],[4038,4038],[4141,4144],[4146,4146],[4150,4151],[4153,4153],[4184,4185],[4448,4607],[4959,4959],[5906,5908],[5938,5940],[5970,5971],[6002,6003],[6068,6069],[6071,6077],[6086,6086],[6089,6099],[6109,6109],[6155,6157],[6313,6313],[6432,6434],[6439,6440],[6450,6450],[6457,6459],[6679,6680],[6912,6915],[6964,6964],[6966,6970],[6972,6972],[6978,6978],[7019,7027],[7616,7626],[7678,7679],[8203,8207],[8234,8238],[8288,8291],[8298,8303],[8400,8431],[12330,12335],[12441,12442],[43014,43014],[43019,43019],[43045,43046],[64286,64286],[65024,65039],[65056,65059],[65279,65279],[65529,65531],[68097,68099],[68101,68102],[68108,68111],[68152,68154],[68159,68159],[119143,119145],[119155,119170],[119173,119179],[119210,119213],[119362,119364],[917505,917505],[917536,917631],[917760,917999]];return function(i){return 0===i?e.nul:i<32||i>=127&&i<160?e.control:t(i)?0:r(i)?2:1}}({nul:0,control:0})},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=new RegExp("(?:^|[^\\da-z\\.-]+)((https?:\\/\\/)((([\\da-z\\.-]+)\\.([a-z\\.]{2,6}))|((\\d{1,3}\\.){3}\\d{1,3})|(localhost))(:\\d{1,5})?(\\/[\\/\\w\\.\\-%~]*)*(\\?[0-9\\w\\[\\]\\(\\)\\/\\?\\!#@$%&'*+,:;~\\=\\.\\-]*)?(#[0-9\\w\\[\\]\\(\\)\\/\\?\\!#@$%&'*+,:;~\\=\\.\\-]*)?)($|[^\\/\\w\\.\\-%]+)"),o=0,s=function(){function e(){this._nextLinkMatcherId=o,this._rowTimeoutIds=[],this._linkMatchers=[],this.registerLinkMatcher(i,null,{matchIndex:1})}return e.prototype.attachToDom=function(e,t){this._document=e,this._rows=t},e.prototype.linkifyRow=function(t){if(this._document){var r=this._rowTimeoutIds[t];r&&clearTimeout(r),this._rowTimeoutIds[t]=setTimeout(this._linkifyRow.bind(this,t),e.TIME_BEFORE_LINKIFY)}},e.prototype.setHypertextLinkHandler=function(e){this._linkMatchers[o].handler=e},e.prototype.setHypertextValidationCallback=function(e){this._linkMatchers[o].validationCallback=e},e.prototype.registerLinkMatcher=function(e,t,r){if(void 0===r&&(r={}),this._nextLinkMatcherId!==o&&!t)throw new Error("handler must be defined");var i={id:this._nextLinkMatcherId++,regex:e,handler:t,matchIndex:r.matchIndex,validationCallback:r.validationCallback,priority:r.priority||0};return this._addLinkMatcherToList(i),i.id},e.prototype._addLinkMatcherToList=function(e){if(0!==this._linkMatchers.length){for(var t=this._linkMatchers.length-1;t>=0;t--)if(e.priority<=this._linkMatchers[t].priority)return void this._linkMatchers.splice(t+1,0,e);this._linkMatchers.splice(0,0,e)}else this._linkMatchers.push(e)},e.prototype.deregisterLinkMatcher=function(e){for(var t=1;t<this._linkMatchers.length;t++)if(this._linkMatchers[t].id===e)return this._linkMatchers.splice(t,1),!0;return!1},e.prototype._linkifyRow=function(e){var t=this._rows[e];if(t){t.textContent;for(var r=0;r<this._linkMatchers.length;r++){var i=this._linkMatchers[r],o=this._doLinkifyRow(t,i);if(o.length>0){if(i.validationCallback)for(var s=function(e){var t=o[e];i.validationCallback(t.textContent,t,function(e){e||t.classList.add("xterm-invalid-link")})},n=0;n<o.length;n++)s(n);return}}}},e.prototype._doLinkifyRow=function(e,t){var r=[],i=t.id===o,s=e.childNodes,n=e.textContent.match(t.regex);if(!n||0===n.length)return r;for(var a=n["number"!=typeof t.matchIndex?0:t.matchIndex],l=n.index+a.length,h=0;h<s.length;h++){var c=s[h],u=c.textContent.indexOf(a);if(u>=0){var d=this._createAnchorElement(a,t.handler,i);if(c.textContent.length===a.length)if(3===c.nodeType)this._replaceNode(c,d);else{var p=c;if("A"===p.nodeName)return r;p.innerHTML="",p.appendChild(d)}else if(c.childNodes.length>1)for(var f=0;f<c.childNodes.length;f++){var g=c.childNodes[f],m=g.textContent.indexOf(a);if(-1!==m){this._replaceNodeSubstringWithNode(g,d,a,m);break}}else h+=this._replaceNodeSubstringWithNode(c,d,a,u);if(r.push(d),!(n=e.textContent.substring(l).match(t.regex))||0===n.length)return r;a=n["number"!=typeof t.matchIndex?0:t.matchIndex],l+=n.index+a.length}}return r},e.prototype._createAnchorElement=function(e,t,r){var i=this._document.createElement("a");return i.textContent=e,i.draggable=!1,r?(i.href=e,i.target="_blank",i.addEventListener("click",function(r){if(t)return t(r,e)})):i.addEventListener("click",function(r){if(!i.classList.contains("xterm-invalid-link"))return t(r,e)}),i},e.prototype._replaceNode=function(e){for(var t=[],r=1;r<arguments.length;r++)t[r-1]=arguments[r];for(var i=e.parentNode,o=0;o<t.length;o++)i.insertBefore(t[o],e);i.removeChild(e)},e.prototype._replaceNodeSubstringWithNode=function(e,t,r,i){if(1===e.childNodes.length&&(e=e.childNodes[0]),3!==e.nodeType)throw new Error("targetNode must be a text node or only contain a single text node");var o=e.textContent;if(0===i){var s=o.substring(r.length),n=this._document.createTextNode(s);return this._replaceNode(e,t,n),0}if(i===e.textContent.length-r.length){var a=o.substring(0,i),l=this._document.createTextNode(a);return this._replaceNode(e,l,t),0}var h=o.substring(0,i),c=this._document.createTextNode(h),u=o.substring(i+r.length),d=this._document.createTextNode(u);return this._replaceNode(e,c,t,d),1},e}();s.TIME_BEFORE_LINKIFY=200,t.Linkifier=s},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=r(2),o=r(4),s={};s[i.C0.BEL]=function(e,t){return t.bell()},s[i.C0.LF]=function(e,t){return t.lineFeed()},s[i.C0.VT]=s[i.C0.LF],s[i.C0.FF]=s[i.C0.LF],s[i.C0.CR]=function(e,t){return t.carriageReturn()},s[i.C0.BS]=function(e,t){return t.backspace()},s[i.C0.HT]=function(e,t){return t.tab()},s[i.C0.SO]=function(e,t){return t.shiftOut()},s[i.C0.SI]=function(e,t){return t.shiftIn()},s[i.C0.ESC]=function(e,t){return e.setState(h.ESCAPED)};var n={};n["["]=function(e,t){t.params=[],t.currentParam=0,e.setState(h.CSI_PARAM)},n["]"]=function(e,t){t.params=[],t.currentParam=0,e.setState(h.OSC)},n.P=function(e,t){t.params=[],t.currentParam=0,e.setState(h.DCS)},n._=function(e,t){e.setState(h.IGNORE)},n["^"]=function(e,t){e.setState(h.IGNORE)},n.c=function(e,t){t.reset()},n.E=function(e,t){t.x=0,t.index(),e.setState(h.NORMAL)},n.D=function(e,t){t.index(),e.setState(h.NORMAL)},n.M=function(e,t){t.reverseIndex(),e.setState(h.NORMAL)},n["%"]=function(e,t){t.setgLevel(0),t.setgCharset(0,o.DEFAULT_CHARSET),e.setState(h.NORMAL),e.skipNextChar()},n[i.C0.CAN]=function(e){return e.setState(h.NORMAL)};var a={};a["?"]=function(e){return e.setPrefix("?")},a[">"]=function(e){return e.setPrefix(">")},a["!"]=function(e){return e.setPrefix("!")},a[0]=function(e){return e.setParam(10*e.getParam())},a[1]=function(e){return e.setParam(10*e.getParam()+1)},a[2]=function(e){return e.setParam(10*e.getParam()+2)},a[3]=function(e){return e.setParam(10*e.getParam()+3)},a[4]=function(e){return e.setParam(10*e.getParam()+4)},a[5]=function(e){return e.setParam(10*e.getParam()+5)},a[6]=function(e){return e.setParam(10*e.getParam()+6)},a[7]=function(e){return e.setParam(10*e.getParam()+7)},a[8]=function(e){return e.setParam(10*e.getParam()+8)},a[9]=function(e){return e.setParam(10*e.getParam()+9)},a.$=function(e){return e.setPostfix("$")},a['"']=function(e){return e.setPostfix('"')},a[" "]=function(e){return e.setPostfix(" ")},a["'"]=function(e){return e.setPostfix("'")},a[";"]=function(e){return e.finalizeParam()},a[i.C0.CAN]=function(e){return e.setState(h.NORMAL)};var l={};l["@"]=function(e,t,r){return e.insertChars(t)},l.A=function(e,t,r){return e.cursorUp(t)},l.B=function(e,t,r){return e.cursorDown(t)},l.C=function(e,t,r){return e.cursorForward(t)},l.D=function(e,t,r){return e.cursorBackward(t)},l.E=function(e,t,r){return e.cursorNextLine(t)},l.F=function(e,t,r){return e.cursorPrecedingLine(t)},l.G=function(e,t,r){return e.cursorCharAbsolute(t)},l.H=function(e,t,r){return e.cursorPosition(t)},l.I=function(e,t,r){return e.cursorForwardTab(t)},l.J=function(e,t,r){return e.eraseInDisplay(t)},l.K=function(e,t,r){return e.eraseInLine(t)},l.L=function(e,t,r){return e.insertLines(t)},l.M=function(e,t,r){return e.deleteLines(t)},l.P=function(e,t,r){return e.deleteChars(t)},l.S=function(e,t,r){return e.scrollUp(t)},l.T=function(e,t,r){t.length<2&&!r&&e.scrollDown(t)},l.X=function(e,t,r){return e.eraseChars(t)},l.Z=function(e,t,r){return e.cursorBackwardTab(t)},l["`"]=function(e,t,r){return e.charPosAbsolute(t)},l.a=function(e,t,r){return e.HPositionRelative(t)},l.b=function(e,t,r){return e.repeatPrecedingCharacter(t)},l.c=function(e,t,r){return e.sendDeviceAttributes(t)},l.d=function(e,t,r){return e.linePosAbsolute(t)},l.e=function(e,t,r){return e.VPositionRelative(t)},l.f=function(e,t,r){return e.HVPosition(t)},l.g=function(e,t,r){return e.tabClear(t)},l.h=function(e,t,r){return e.setMode(t)},l.l=function(e,t,r){return e.resetMode(t)},l.m=function(e,t,r){return e.charAttributes(t)},l.n=function(e,t,r){return e.deviceStatus(t)},l.p=function(e,t,r){switch(r){case"!":e.softReset(t)}},l.q=function(e,t,r,i){" "===i&&e.setCursorStyle(t)},l.r=function(e,t){return e.setScrollRegion(t)},l.s=function(e,t){return e.saveCursor(t)},l.u=function(e,t){return e.restoreCursor(t)},l[i.C0.CAN]=function(e,t,r,i,o){return o.setState(h.NORMAL)};var h;!function(e){e[e.NORMAL=0]="NORMAL",e[e.ESCAPED=1]="ESCAPED",e[e.CSI_PARAM=2]="CSI_PARAM",e[e.CSI=3]="CSI",e[e.OSC=4]="OSC",e[e.CHARSET=5]="CHARSET",e[e.DCS=6]="DCS",e[e.IGNORE=7]="IGNORE"}(h||(h={}));var c=function(){function e(e,t){this._inputHandler=e,this._terminal=t,this._state=h.NORMAL}return e.prototype.parse=function(e){var t,r,c,u,d=e.length;for(this._position=0,this._terminal.surrogate_high&&(e=this._terminal.surrogate_high+e,this._terminal.surrogate_high="");this._position<d;this._position++){if(r=e[this._position],55296<=(c=e.charCodeAt(this._position))&&c<=56319){if(u=e.charCodeAt(this._position+1),isNaN(u)){this._terminal.surrogate_high=r;continue}c=1024*(c-55296)+(u-56320)+65536,r+=e.charAt(this._position+1)}if(!(56320<=c&&c<=57343))switch(this._state){case h.NORMAL:r in s?s[r](this,this._inputHandler):this._inputHandler.addChar(r,c);break;case h.ESCAPED:if(r in n){n[r](this,this._terminal);break}switch(r){case"(":case")":case"*":case"+":case"-":case".":switch(r){case"(":this._terminal.gcharset=0;break;case")":this._terminal.gcharset=1;break;case"*":this._terminal.gcharset=2;break;case"+":this._terminal.gcharset=3;break;case"-":this._terminal.gcharset=1;break;case".":this._terminal.gcharset=2}this._state=h.CHARSET;break;case"/":this._terminal.gcharset=3,this._state=h.CHARSET,this._position--;break;case"N":case"O":break;case"n":this._terminal.setgLevel(2);break;case"o":case"|":this._terminal.setgLevel(3);break;case"}":this._terminal.setgLevel(2);break;case"~":this._terminal.setgLevel(1);break;case"7":this._inputHandler.saveCursor(),this._state=h.NORMAL;break;case"8":this._inputHandler.restoreCursor(),this._state=h.NORMAL;break;case"#":this._state=h.NORMAL,this._position++;break;case"H":this._terminal.tabSet(),this._state=h.NORMAL;break;case"=":this._terminal.log("Serial port requested application keypad."),this._terminal.applicationKeypad=!0,this._terminal.viewport.syncScrollArea(),this._state=h.NORMAL;break;case">":this._terminal.log("Switching back to normal keypad."),this._terminal.applicationKeypad=!1,this._terminal.viewport.syncScrollArea(),this._state=h.NORMAL;break;default:this._state=h.NORMAL,this._terminal.error("Unknown ESC control: %s.",r)}break;case h.CHARSET:r in o.CHARSETS?(t=o.CHARSETS[r],"/"===r&&this.skipNextChar()):t=o.DEFAULT_CHARSET,this._terminal.setgCharset(this._terminal.gcharset,t),this._terminal.gcharset=null,this._state=h.NORMAL;break;case h.OSC:if(r===i.C0.ESC||r===i.C0.BEL){switch(r===i.C0.ESC&&this._position++,this._terminal.params.push(this._terminal.currentParam),this._terminal.params[0]){case 0:case 1:case 2:this._terminal.params[1]&&(this._terminal.title=this._terminal.params[1],this._terminal.handleTitle(this._terminal.title))}this._terminal.params=[],this._terminal.currentParam=0,this._state=h.NORMAL}else this._terminal.params.length?this._terminal.currentParam+=r:r>="0"&&r<="9"?this._terminal.currentParam=10*this._terminal.currentParam+r.charCodeAt(0)-48:";"===r&&(this._terminal.params.push(this._terminal.currentParam),this._terminal.currentParam="");break;case h.CSI_PARAM:if(r in a){a[r](this);break}this.finalizeParam(),this._state=h.CSI;case h.CSI:r in l?l[r](this._inputHandler,this._terminal.params,this._terminal.prefix,this._terminal.postfix,this):this._terminal.error("Unknown CSI code: %s.",r),this._state=h.NORMAL,this._terminal.prefix="",this._terminal.postfix="";break;case h.DCS:if(r===i.C0.ESC||r===i.C0.BEL){r===i.C0.ESC&&this._position++;var p=void 0,f=void 0;switch(this._terminal.prefix){case"":break;case"$q":switch(p=this._terminal.currentParam,f=!1,p){case'"q':p='0"q';break;case'"p':p='61"p';break;case"r":p=this._terminal.scrollTop+1+";"+(this._terminal.scrollBottom+1)+"r";break;case"m":p="0m";break;default:this._terminal.error("Unknown DCS Pt: %s.",p),p=""}this._terminal.send(i.C0.ESC+"P"+ +f+"$r"+p+i.C0.ESC+"\\");break;case"+p":break;case"+q":p=this._terminal.currentParam,f=!1,this._terminal.send(i.C0.ESC+"P"+ +f+"+r"+p+i.C0.ESC+"\\");break;default:this._terminal.error("Unknown DCS prefix: %s.",this._terminal.prefix)}this._terminal.currentParam=0,this._terminal.prefix="",this._state=h.NORMAL}else this._terminal.currentParam?this._terminal.currentParam+=r:this._terminal.prefix||"$"===r||"+"===r?2===this._terminal.prefix.length?this._terminal.currentParam=r:this._terminal.prefix+=r:this._terminal.currentParam=r;break;case h.IGNORE:r!==i.C0.ESC&&r!==i.C0.BEL||(r===i.C0.ESC&&this._position++,this._state=h.NORMAL)}}return this._state},e.prototype.setState=function(e){this._state=e},e.prototype.setPrefix=function(e){this._terminal.prefix=e},e.prototype.setPostfix=function(e){this._terminal.postfix=e},e.prototype.setParam=function(e){this._terminal.currentParam=e},e.prototype.getParam=function(){return this._terminal.currentParam},e.prototype.finalizeParam=function(){this._terminal.params.push(this._terminal.currentParam),this._terminal.currentParam=0},e.prototype.skipNextChar=function(){this._position++},e}();t.Parser=c},function(e,t,r){"use strict";function i(e){var t=e.ownerDocument.createElement("span");t.innerHTML="hello world",e.appendChild(t);var r=t.offsetWidth,i=t.offsetHeight;t.style.fontWeight="bold";var o=t.offsetWidth,s=t.offsetHeight;return e.removeChild(t),r!==o||i!==s}Object.defineProperty(t,"__esModule",{value:!0});var o,s=r(26);!function(e){e[e.BOLD=1]="BOLD",e[e.UNDERLINE=2]="UNDERLINE",e[e.BLINK=4]="BLINK",e[e.INVERSE=8]="INVERSE",e[e.INVISIBLE=16]="INVISIBLE"}(o||(o={}));var n=null,a=function(){function e(e){this._terminal=e,this._refreshRowsQueue=[],this._refreshFramesSkipped=0,this._refreshAnimationFrame=null,this._spanElementObjectPool=new s.DomElementObjectPool("span"),null===n&&(n=i(this._terminal.element)),this._spanElementObjectPool=new s.DomElementObjectPool("span")}return e.prototype.queueRefresh=function(e,t){this._refreshRowsQueue.push({start:e,end:t}),this._refreshAnimationFrame||(this._refreshAnimationFrame=window.requestAnimationFrame(this._refreshLoop.bind(this)))},e.prototype._refreshLoop=function(){if(this._terminal.writeBuffer.length>0&&this._refreshFramesSkipped++<=5)this._refreshAnimationFrame=window.requestAnimationFrame(this._refreshLoop.bind(this));else{this._refreshFramesSkipped=0;var e,t;if(this._refreshRowsQueue.length>4)e=0,t=this._terminal.rows-1;else{e=this._refreshRowsQueue[0].start,t=this._refreshRowsQueue[0].end;for(var r=1;r<this._refreshRowsQueue.length;r++)this._refreshRowsQueue[r].start<e&&(e=this._refreshRowsQueue[r].start),this._refreshRowsQueue[r].end>t&&(t=this._refreshRowsQueue[r].end)}this._refreshRowsQueue=[],this._refreshAnimationFrame=null,this._refresh(e,t)}},e.prototype._refresh=function(e,t){var r;t-e>=this._terminal.rows/2&&(r=this._terminal.element.parentNode)&&this._terminal.element.removeChild(this._terminal.rowContainer);var i=this._terminal.cols,s=e;for(t>=this._terminal.rows&&(this._terminal.log("`end` is too large. Most likely a bad CSR."),t=this._terminal.rows-1);s<=t;s++){var a=s+this._terminal.ydisp,l=this._terminal.lines.get(a),h=void 0;h=this._terminal.y===s-(this._terminal.ybase-this._terminal.ydisp)&&this._terminal.cursorState&&!this._terminal.cursorHidden?this._terminal.x:-1;for(var c=this._terminal.defAttr,u=document.createDocumentFragment(),d="",p=void 0;this._terminal.children[s].children.length;){var f=this._terminal.children[s].children[0];this._terminal.children[s].removeChild(f),this._spanElementObjectPool.release(f)}for(var g=0;g<i;g++){var m=l[g][0],y=l[g][1],b=l[g][2];if(b){if(g===h&&(m=-1),m!==c&&(c!==this._terminal.defAttr&&(d&&(p.innerHTML=d,d=""),u.appendChild(p),p=null),m!==this._terminal.defAttr))if(d&&!p&&(p=this._spanElementObjectPool.acquire()),p&&(d&&(p.innerHTML=d,d=""),u.appendChild(p)),p=this._spanElementObjectPool.acquire(),-1===m)p.classList.add("reverse-video"),p.classList.add("terminal-cursor");else{var _=511&m,C=m>>9&511,w=m>>18;if(w&o.BOLD&&(n||p.classList.add("xterm-bold"),C<8&&(C+=8)),w&o.UNDERLINE&&p.classList.add("xterm-underline"),w&o.BLINK&&p.classList.add("xterm-blink"),w&o.INVERSE){var S=_;_=C,C=S,1&w&&C<8&&(C+=8)}w&o.INVISIBLE&&p.classList.add("xterm-hidden"),w&o.INVERSE&&(257===_&&(_=15),256===C&&(C=0)),_<256&&p.classList.add("xterm-bg-color-"+_),C<256&&p.classList.add("xterm-color-"+C)}if(2===b)d+='<span class="xterm-wide-char">'+y+"</span>";else if(y.charCodeAt(0)>255)d+='<span class="xterm-normal-char">'+y+"</span>";else switch(y){case"&":d+="&amp;";break;case"<":d+="&lt;";break;case">":d+="&gt;";break;default:d+=y<=" "?"&nbsp;":y}c=m}}d&&!p&&(p=this._spanElementObjectPool.acquire()),p&&(d&&(p.innerHTML=d,d=""),u.appendChild(p),p=null),this._terminal.children[s].appendChild(u)}r&&this._terminal.element.appendChild(this._terminal.rowContainer),this._terminal.emit("refresh",{element:this._terminal.element,start:e,end:t})},e.prototype.refreshSelection=function(e,t){for(;this._terminal.selectionContainer.children.length;)this._terminal.selectionContainer.removeChild(this._terminal.selectionContainer.children[0]);if(e&&t){var r=e[1]-this._terminal.ydisp,i=t[1]-this._terminal.ydisp,o=Math.max(r,0),s=Math.min(i,this._terminal.rows-1);if(!(o>=this._terminal.rows||s<0)){var n=document.createDocumentFragment(),a=r===o?e[0]:0,l=o===s?t[0]:this._terminal.cols;n.appendChild(this._createSelectionElement(o,a,l));var h=s-o-1;if(n.appendChild(this._createSelectionElement(o+1,0,this._terminal.cols,h)),o!==s){var c=i===s?t[0]:this._terminal.cols;n.appendChild(this._createSelectionElement(s,0,c))}this._terminal.selectionContainer.appendChild(n)}}},e.prototype._createSelectionElement=function(e,t,r,i){void 0===i&&(i=1);var o=document.createElement("div");return o.style.height=i*this._terminal.charMeasure.height+"px",o.style.top=e*this._terminal.charMeasure.height+"px",o.style.left=t*this._terminal.charMeasure.width+"px",o.style.width=this._terminal.charMeasure.width*(r-t)+"px",o},e}();t.Renderer=a},function(e,t,r){"use strict";var i=this&&this.__extends||function(){var e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var r in t)t.hasOwnProperty(r)&&(e[r]=t[r])};return function(t,r){function i(){this.constructor=t}e(t,r),t.prototype=null===r?Object.create(r):(i.prototype=r.prototype,new i)}}();Object.defineProperty(t,"__esModule",{value:!0});var o,s=r(10),n=r(9),a=r(1),l=r(21),h=String.fromCharCode(160),c=new RegExp(h,"g");!function(e){e[e.NORMAL=0]="NORMAL",e[e.WORD=1]="WORD",e[e.LINE=2]="LINE"}(o||(o={}));var u=function(e){function t(t,r,i,s){var n=e.call(this)||this;return n._terminal=t,n._buffer=r,n._rowContainer=i,n._charMeasure=s,n._initListeners(),n.enable(),n._model=new l.SelectionModel(t),n._lastMouseDownTime=0,n._activeSelectionMode=o.NORMAL,n}return i(t,e),t.prototype._initListeners=function(){var e=this;this._bufferTrimListener=function(t){return e._onTrim(t)},this._mouseMoveListener=function(t){return e._onMouseMove(t)},this._mouseDownListener=function(t){return e._onMouseDown(t)},this._mouseUpListener=function(t){return e._onMouseUp(t)}},t.prototype.disable=function(){this.clearSelection(),this._buffer.off("trim",this._bufferTrimListener),this._rowContainer.removeEventListener("mousedown",this._mouseDownListener)},t.prototype.enable=function(){this._buffer.on("trim",this._bufferTrimListener),this._rowContainer.addEventListener("mousedown",this._mouseDownListener)},t.prototype.setBuffer=function(e){this._buffer=e,this.clearSelection()},Object.defineProperty(t.prototype,"hasSelection",{get:function(){var e=this._model.finalSelectionStart,t=this._model.finalSelectionEnd;return!(!e||!t)&&(e[0]!==t[0]||e[1]!==t[1])},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"selectionText",{get:function(){var e=this._model.finalSelectionStart,t=this._model.finalSelectionEnd;if(!e||!t)return"";var r=e[1]===t[1]?t[0]:null,i=[];i.push(this._translateBufferLineToString(this._buffer.get(e[1]),!0,e[0],r));for(var o=e[1]+1;o<=t[1]-1;o++){var s=this._buffer.get(o),a=this._translateBufferLineToString(s,!0);s.isWrapped?i[i.length-1]+=a:i.push(a)}if(e[1]!==t[1]){var s=this._buffer.get(t[1]),a=this._translateBufferLineToString(s,!0,0,t[0]);s.isWrapped?i[i.length-1]+=a:i.push(a)}return i.map(function(e){return e.replace(c," ")}).join(n.isMSWindows?"\r\n":"\n")},enumerable:!0,configurable:!0}),t.prototype.clearSelection=function(){this._model.clearSelection(),this._removeMouseDownListeners(),this.refresh()},t.prototype._translateBufferLineToString=function(e,t,r,i){void 0===r&&(r=0),void 0===i&&(i=null);for(var o="",s=r,n=i,a=0;a<e.length;a++){var l=e[a];o+=l[1],0===l[2]&&(r>=a&&s--,i>=a&&n--)}var h=n||e.length;if(t){var c=o.search(/\s+$/);if(-1!==c&&(h=Math.min(h,c)),h<=s)return""}return o.substring(s,h)},t.prototype.refresh=function(e){var t=this;this._refreshAnimationFrame||(this._refreshAnimationFrame=window.requestAnimationFrame(function(){return t._refresh()})),n.isLinux&&e&&this.selectionText.length&&this.emit("newselection",this.selectionText)},t.prototype._refresh=function(){this._refreshAnimationFrame=null,this.emit("refresh",{start:this._model.finalSelectionStart,end:this._model.finalSelectionEnd})},t.prototype.selectAll=function(){this._model.isSelectAllActive=!0,this.refresh()},t.prototype._onTrim=function(e){this._model.onTrim(e)&&this.refresh()},t.prototype._getMouseBufferCoords=function(e){var t=s.getCoords(e,this._rowContainer,this._charMeasure,this._terminal.cols,this._terminal.rows,!0);return t[0]--,t[1]--,t[1]+=this._terminal.ydisp,t},t.prototype._getMouseEventScrollAmount=function(e){var t=s.getCoordsRelativeToElement(e,this._rowContainer)[1],r=this._terminal.rows*this._charMeasure.height;return t>=0&&t<=r?0:(t>r&&(t-=r),t=Math.min(Math.max(t,-50),50),(t/=50)/Math.abs(t)+Math.round(14*t))},t.prototype._onMouseDown=function(e){0===e.button&&(e.preventDefault(),this._dragScrollAmount=0,this._setMouseClickCount(e),e.shiftKey?this._onShiftClick(e):1===this._clickCount?this._onSingleClick(e):2===this._clickCount?this._onDoubleClick(e):3===this._clickCount&&this._onTripleClick(e),this._addMouseDownListeners(),this.refresh(!0))},t.prototype._addMouseDownListeners=function(){var e=this;this._rowContainer.ownerDocument.addEventListener("mousemove",this._mouseMoveListener),this._rowContainer.ownerDocument.addEventListener("mouseup",this._mouseUpListener),this._dragScrollIntervalTimer=setInterval(function(){return e._dragScroll()},50)},t.prototype._removeMouseDownListeners=function(){this._rowContainer.ownerDocument.removeEventListener("mousemove",this._mouseMoveListener),this._rowContainer.ownerDocument.removeEventListener("mouseup",this._mouseUpListener),clearInterval(this._dragScrollIntervalTimer),this._dragScrollIntervalTimer=null},t.prototype._onShiftClick=function(e){this._model.selectionStart&&(this._model.selectionEnd=this._getMouseBufferCoords(e))},t.prototype._onSingleClick=function(e){this._model.selectionStartLength=0,this._model.isSelectAllActive=!1,this._activeSelectionMode=o.NORMAL,this._model.selectionStart=this._getMouseBufferCoords(e),this._model.selectionStart&&(this._model.selectionEnd=null,0===this._buffer.get(this._model.selectionStart[1])[this._model.selectionStart[0]][2]&&this._model.selectionStart[0]++)},t.prototype._onDoubleClick=function(e){var t=this._getMouseBufferCoords(e);t&&(this._activeSelectionMode=o.WORD,this._selectWordAt(t))},t.prototype._onTripleClick=function(e){var t=this._getMouseBufferCoords(e);t&&(this._activeSelectionMode=o.LINE,this._selectLineAt(t[1]))},t.prototype._setMouseClickCount=function(e){var t=(new Date).getTime();(t-this._lastMouseDownTime>400||this._distanceFromLastMousePosition(e)>10)&&(this._clickCount=0),this._lastMouseDownTime=t,this._lastMousePosition=[e.pageX,e.pageY],this._clickCount++},t.prototype._distanceFromLastMousePosition=function(e){return Math.max(Math.abs(this._lastMousePosition[0]-e.pageX),Math.abs(this._lastMousePosition[1]-e.pageY))},t.prototype._onMouseMove=function(e){var t=this._model.selectionEnd?[this._model.selectionEnd[0],this._model.selectionEnd[1]]:null;if(this._model.selectionEnd=this._getMouseBufferCoords(e),this._activeSelectionMode===o.LINE?this._model.selectionEnd[1]<this._model.selectionStart[1]?this._model.selectionEnd[0]=0:this._model.selectionEnd[0]=this._terminal.cols:this._activeSelectionMode===o.WORD&&this._selectToWordAt(this._model.selectionEnd),this._dragScrollAmount=this._getMouseEventScrollAmount(e),this._dragScrollAmount>0?this._model.selectionEnd[0]=this._terminal.cols-1:this._dragScrollAmount<0&&(this._model.selectionEnd[0]=0),this._model.selectionEnd[1]<this._buffer.length){var r=this._buffer.get(this._model.selectionEnd[1])[this._model.selectionEnd[0]];r&&0===r[2]&&this._model.selectionEnd[0]++}t&&t[0]===this._model.selectionEnd[0]&&t[1]===this._model.selectionEnd[1]||this.refresh(!0)},t.prototype._dragScroll=function(){this._dragScrollAmount&&(this._terminal.scrollDisp(this._dragScrollAmount,!1),this._dragScrollAmount>0?this._model.selectionEnd=[this._terminal.cols-1,this._terminal.ydisp+this._terminal.rows]:this._model.selectionEnd=[0,this._terminal.ydisp],this.refresh())},t.prototype._onMouseUp=function(e){this._removeMouseDownListeners()},t.prototype._convertViewportColToCharacterIndex=function(e,t){for(var r=t[0],i=0;t[0]>=i;i++)0===e[i][2]&&r--;return r},t.prototype._getWordAt=function(e){var t=this._buffer.get(e[1]),r=this._translateBufferLineToString(t,!1),i=this._convertViewportColToCharacterIndex(t,e),o=i,s=e[0]-o,n=0,a=0;if(" "===r.charAt(o)){for(;o>0&&" "===r.charAt(o-1);)o--;for(;i<r.length&&" "===r.charAt(i+1);)i++}else{var l=e[0],h=e[0];for(0===t[l][2]&&(n++,l--),2===t[h][2]&&(a++,h++);o>0&&!this._isCharWordSeparator(r.charAt(o-1));)0===t[l-1][2]&&(n++,l--),o--,l--;for(;i+1<r.length&&!this._isCharWordSeparator(r.charAt(i+1));)2===t[h+1][2]&&(a++,h++),i++,h++}return{start:o+s-n,length:Math.min(i-o+n+a+1,this._terminal.cols)}},t.prototype._selectWordAt=function(e){var t=this._getWordAt(e);this._model.selectionStart=[t.start,e[1]],this._model.selectionStartLength=t.length},t.prototype._selectToWordAt=function(e){var t=this._getWordAt(e);this._model.selectionEnd=[this._model.areSelectionValuesReversed()?t.start:t.start+t.length,e[1]]},t.prototype._isCharWordSeparator=function(e){return" ()[]{}'\"".indexOf(e)>=0},t.prototype._selectLineAt=function(e){this._model.selectionStart=[0,e],this._model.selectionStartLength=this._terminal.cols},t}(a.EventEmitter);t.SelectionManager=u},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=function(){function e(e){this._terminal=e,this.clearSelection()}return e.prototype.clearSelection=function(){this.selectionStart=null,this.selectionEnd=null,this.isSelectAllActive=!1,this.selectionStartLength=0},Object.defineProperty(e.prototype,"finalSelectionStart",{get:function(){return this.isSelectAllActive?[0,0]:this.selectionEnd&&this.selectionStart&&this.areSelectionValuesReversed()?this.selectionEnd:this.selectionStart},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"finalSelectionEnd",{get:function(){return this.isSelectAllActive?[this._terminal.cols,this._terminal.ybase+this._terminal.rows-1]:this.selectionStart?!this.selectionEnd||this.areSelectionValuesReversed()?[this.selectionStart[0]+this.selectionStartLength,this.selectionStart[1]]:this.selectionStartLength&&this.selectionEnd[1]===this.selectionStart[1]?[Math.max(this.selectionStart[0]+this.selectionStartLength,this.selectionEnd[0]),this.selectionEnd[1]]:this.selectionEnd:null},enumerable:!0,configurable:!0}),e.prototype.areSelectionValuesReversed=function(){var e=this.selectionStart,t=this.selectionEnd;return e[1]>t[1]||e[1]===t[1]&&e[0]>t[0]},e.prototype.onTrim=function(e){return this.selectionStart&&(this.selectionStart[1]-=e),this.selectionEnd&&(this.selectionEnd[1]-=e),this.selectionEnd&&this.selectionEnd[1]<0?(this.clearSelection(),!0):(this.selectionStart&&this.selectionStart[1]<0&&(this.selectionStart[1]=0),!1)},e}();t.SelectionModel=i},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=function(){function e(e,t,r,i){var o=this;this.terminal=e,this.viewportElement=t,this.scrollArea=r,this.charMeasure=i,this.currentRowHeight=0,this.lastRecordedBufferLength=0,this.lastRecordedViewportHeight=0,this.terminal.on("scroll",this.syncScrollArea.bind(this)),this.terminal.on("resize",this.syncScrollArea.bind(this)),this.viewportElement.addEventListener("scroll",this.onScroll.bind(this)),setTimeout(function(){return o.syncScrollArea()},0)}return e.prototype.refresh=function(){if(this.charMeasure.height>0){var e=this.charMeasure.height!==this.currentRowHeight;e&&(this.currentRowHeight=this.charMeasure.height,this.viewportElement.style.lineHeight=this.charMeasure.height+"px",this.terminal.rowContainer.style.lineHeight=this.charMeasure.height+"px");var t=this.lastRecordedViewportHeight!==this.terminal.rows;(e||t)&&(this.lastRecordedViewportHeight=this.terminal.rows,this.viewportElement.style.height=this.charMeasure.height*this.terminal.rows+"px",this.terminal.selectionContainer.style.height=this.viewportElement.style.height),this.scrollArea.style.height=this.charMeasure.height*this.lastRecordedBufferLength+"px"}},e.prototype.syncScrollArea=function(){this.lastRecordedBufferLength!==this.terminal.lines.length?(this.lastRecordedBufferLength=this.terminal.lines.length,this.refresh()):this.lastRecordedViewportHeight!==this.terminal.rows?this.refresh():this.charMeasure.height!==this.currentRowHeight&&this.refresh();var e=this.terminal.ydisp*this.currentRowHeight;this.viewportElement.scrollTop!==e&&(this.viewportElement.scrollTop=e)},e.prototype.onScroll=function(e){var t=Math.round(this.viewportElement.scrollTop/this.currentRowHeight)-this.terminal.ydisp;this.terminal.scrollDisp(t,!0)},e.prototype.onWheel=function(e){if(0!==e.deltaY){var t=1;e.deltaMode===WheelEvent.DOM_DELTA_LINE?t=this.currentRowHeight:e.deltaMode===WheelEvent.DOM_DELTA_PAGE&&(t=this.currentRowHeight*this.terminal.rows),this.viewportElement.scrollTop+=e.deltaY*t,e.preventDefault()}},e.prototype.onTouchStart=function(e){this.lastTouchY=e.touches[0].pageY},e.prototype.onTouchMove=function(e){var t=this.lastTouchY-e.touches[0].pageY;this.lastTouchY=e.touches[0].pageY,0!==t&&(this.viewportElement.scrollTop+=t,e.preventDefault())},e}();t.Viewport=i},function(e,t,r){"use strict";function i(e,t){return t?e.replace(/\r?\n/g,"\r"):e}function o(e,t){t.style.position="fixed",t.style.width="20px",t.style.height="20px",t.style.left=e.clientX-10+"px",t.style.top=e.clientY-10+"px",t.style.zIndex="1000",t.focus(),setTimeout(function(){t.style.position=null,t.style.width=null,t.style.height=null,t.style.left=null,t.style.top=null,t.style.zIndex=null},4)}Object.defineProperty(t,"__esModule",{value:!0}),t.prepareTextForTerminal=i,t.copyHandler=function(e,t,r){t.browser.isMSIE?window.clipboardData.setData("Text",r.selectionText):e.clipboardData.setData("text/plain",r.selectionText),e.preventDefault()},t.pasteHandler=function(e,t){e.stopPropagation();var r=function(r){return r=i(r,t.browser.isMSWindows),t.handler(r),t.textarea.value="",t.emit("paste",r),t.cancel(e)};t.browser.isMSIE?window.clipboardData&&r(window.clipboardData.getData("Text")):e.clipboardData&&r(e.clipboardData.getData("text/plain"))},t.moveTextAreaUnderMouseCursor=o,t.rightClickHandler=function(e,t,r){o(e,t),t.value=r.selectionText,t.select()}},function(e,t,r){"use strict";var i=this&&this.__extends||function(){var e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var r in t)t.hasOwnProperty(r)&&(e[r]=t[r])};return function(t,r){function i(){this.constructor=t}e(t,r),t.prototype=null===r?Object.create(r):(i.prototype=r.prototype,new i)}}();Object.defineProperty(t,"__esModule",{value:!0});var o=function(e){function t(t,r){var i=e.call(this)||this;return i._document=t,i._parentElement=r,i}return i(t,e),Object.defineProperty(t.prototype,"width",{get:function(){return this._width},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"height",{get:function(){return this._height},enumerable:!0,configurable:!0}),t.prototype.measure=function(){var e=this;this._measureElement?this._doMeasure():(this._measureElement=this._document.createElement("span"),this._measureElement.style.position="absolute",this._measureElement.style.top="0",this._measureElement.style.left="-9999em",this._measureElement.textContent="W",this._measureElement.setAttribute("aria-hidden","true"),this._parentElement.appendChild(this._measureElement),setTimeout(function(){return e._doMeasure()},0))},t.prototype._doMeasure=function(){var e=this._measureElement.getBoundingClientRect();0!==e.width&&0!==e.height&&(this._width===e.width&&this._height===e.height||(this._width=e.width,this._height=e.height,this.emit("charsizechanged")))},t}(r(1).EventEmitter);t.CharMeasure=o},function(e,t,r){"use strict";var i=this&&this.__extends||function(){var e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var r in t)t.hasOwnProperty(r)&&(e[r]=t[r])};return function(t,r){function i(){this.constructor=t}e(t,r),t.prototype=null===r?Object.create(r):(i.prototype=r.prototype,new i)}}();Object.defineProperty(t,"__esModule",{value:!0});var o=function(e){function t(t){var r=e.call(this)||this;return r._array=new Array(t),r._startIndex=0,r._length=0,r}return i(t,e),Object.defineProperty(t.prototype,"maxLength",{get:function(){return this._array.length},set:function(e){for(var t=new Array(e),r=0;r<Math.min(e,this.length);r++)t[r]=this._array[this._getCyclicIndex(r)];this._array=t,this._startIndex=0},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"length",{get:function(){return this._length},set:function(e){if(e>this._length)for(var t=this._length;t<e;t++)this._array[t]=void 0;this._length=e},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"forEach",{get:function(){var e=this;return function(t){for(var r=e.length,i=0;i<r;i++)t(e.get(i),i)}},enumerable:!0,configurable:!0}),t.prototype.get=function(e){return this._array[this._getCyclicIndex(e)]},t.prototype.set=function(e,t){this._array[this._getCyclicIndex(e)]=t},t.prototype.push=function(e){this._array[this._getCyclicIndex(this._length)]=e,this._length===this.maxLength?(++this._startIndex===this.maxLength&&(this._startIndex=0),this.emit("trim",1)):this._length++},t.prototype.pop=function(){return this._array[this._getCyclicIndex(this._length---1)]},t.prototype.splice=function(e,t){for(var r=[],i=2;i<arguments.length;i++)r[i-2]=arguments[i];if(t){for(o=e;o<this._length-t;o++)this._array[this._getCyclicIndex(o)]=this._array[this._getCyclicIndex(o+t)];this._length-=t}if(r&&r.length){for(o=this._length-1;o>=e;o--)this._array[this._getCyclicIndex(o+r.length)]=this._array[this._getCyclicIndex(o)];for(var o=0;o<r.length;o++)this._array[this._getCyclicIndex(e+o)]=r[o];if(this._length+r.length>this.maxLength){var s=this._length+r.length-this.maxLength;this._startIndex+=s,this._length=this.maxLength,this.emit("trim",s)}else this._length+=r.length}},t.prototype.trimStart=function(e){e>this._length&&(e=this._length),this._startIndex+=e,this._length-=e,this.emit("trim",e)},t.prototype.shiftElements=function(e,t,r){if(!(t<=0)){if(e<0||e>=this._length)throw new Error("start argument out of range");if(e+r<0)throw new Error("Cannot shift elements in list beyond index 0");if(r>0){for(o=t-1;o>=0;o--)this.set(e+o+r,this.get(e+o));var i=e+t+r-this._length;if(i>0)for(this._length+=i;this._length>this.maxLength;)this._length--,this._startIndex++,this.emit("trim",1)}else for(var o=0;o<t;o++)this.set(e+o+r,this.get(e+o))}},t.prototype._getCyclicIndex=function(e){return(this._startIndex+e)%this.maxLength},t}(r(1).EventEmitter);t.CircularList=o},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=function(){function e(e){this.type=e,this._type=e,this._pool=[],this._inUse={}}return e.prototype.acquire=function(){var t;return t=0===this._pool.length?this._createNew():this._pool.pop(),this._inUse[t.getAttribute(e.OBJECT_ID_ATTRIBUTE)]=t,t},e.prototype.release=function(t){if(!this._inUse[t.getAttribute(e.OBJECT_ID_ATTRIBUTE)])throw new Error("Could not release an element not yet acquired");delete this._inUse[t.getAttribute(e.OBJECT_ID_ATTRIBUTE)],this._cleanElement(t),this._pool.push(t)},e.prototype._createNew=function(){var t=document.createElement(this._type),r=e._objectCount++;return t.setAttribute(e.OBJECT_ID_ATTRIBUTE,r.toString(10)),t},e.prototype._cleanElement=function(e){e.className="",e.innerHTML=""},e}();i.OBJECT_ID_ATTRIBUTE="data-obj-id",i._objectCount=0,t.DomElementObjectPool=i},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0}),t.contains=function(e,t){return e.indexOf(t)>=0}},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=r(11),o=r(14),s=r(13),n=r(12),a=document.getElementById("terminal");if(null!==a){var l;l="hterm"==gotty_term?new i.Hterm(a):new o.Xterm(a);var h=("https:"==window.location.protocol?"wss://":"ws://")+window.location.host+window.location.pathname+"ws",c=window.location.search,u=new n.ConnectionFactory(h,s.protocols),d=new s.WebTTY(l,u,c,gotty_auth_token).open();window.addEventListener("unload",function(){d(),l.close()})}},function(e,t,r){function i(e){return r(o(e))}function o(e){var t=s[e];if(!(t+1))throw new Error("Cannot find module '"+e+"'.");return t}var s={"./attach/attach":5,"./attach/attach.js":5,"./attach/package.json":30,"./fit/fit":6,"./fit/fit.js":6,"./fit/package.json":31,"./fullscreen/fullscreen":7,"./fullscreen/fullscreen.css":32,"./fullscreen/fullscreen.js":7,"./fullscreen/package.json":33,"./terminado/package.json":34,"./terminado/terminado":8,"./terminado/terminado.js":8};i.keys=function(){return Object.keys(s)},i.resolve=o,e.exports=i,i.id=29},function(e,t){e.exports={name:"xterm.attach",main:"attach.js",private:!0}},function(e,t){e.exports={name:"xterm.fit",main:"fit.js",private:!0}},function(e,t){throw new Error("Module parse failed: /home/yudai/archive/products/2015/gotty/src/github.com/yudai/gotty/js/node_modules/xterm/lib/addons/fullscreen/fullscreen.css Unexpected token (1:0)\nYou may need an appropriate loader to handle this file type.\n| .xterm.fullscreen {\n|     position: fixed;\n|     top: 0;")},function(e,t){e.exports={name:"xterm.fullscreen",main:"fullscreen.js",private:!0}},function(e,t){e.exports={name:"xterm.terminado",main:"terminado.js",private:!0}}]);
\ No newline at end of file
+!function(t){e.exports=t(r(0))}(function(e){"use strict";var t={};return t.terminadoAttach=function(e,t,r,i){r=void 0===r||r,e.socket=t,e._flushBuffer=function(){e.write(e._attachSocketBuffer),e._attachSocketBuffer=null,clearTimeout(e._attachSocketBufferTimer),e._attachSocketBufferTimer=null},e._pushToBuffer=function(t){e._attachSocketBuffer?e._attachSocketBuffer+=t:(e._attachSocketBuffer=t,setTimeout(e._flushBuffer,10))},e._getMessage=function(t){var r=JSON.parse(t.data);"stdout"==r[0]&&(i?e._pushToBuffer(r[1]):e.write(r[1]))},e._sendData=function(e){t.send(JSON.stringify(["stdin",e]))},e._setSize=function(e){t.send(JSON.stringify(["set_size",e.rows,e.cols]))},t.addEventListener("message",e._getMessage),r&&e.on("data",e._sendData),e.on("resize",e._setSize),t.addEventListener("close",e.terminadoDetach.bind(e,t)),t.addEventListener("error",e.terminadoDetach.bind(e,t))},t.terminadoDetach=function(e,t){e.off("data",e._sendData),(t=void 0===t?e.socket:t)&&t.removeEventListener("message",e._getMessage),delete e.socket},e.prototype.terminadoAttach=function(e,r,i){return t.terminadoAttach(this,e,r,i)},e.prototype.terminadoDetach=function(e){return t.terminadoDetach(this,e)},t})},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=r(27),o="undefined"==typeof navigator,s=o?"node":navigator.userAgent,n=o?"node":navigator.platform;t.isFirefox=!!~s.indexOf("Firefox"),t.isMSIE=!!~s.indexOf("MSIE")||!!~s.indexOf("Trident"),t.isMac=i.contains(["Macintosh","MacIntel","MacPPC","Mac68K"],n),t.isIpad="iPad"===n,t.isIphone="iPhone"===n,t.isMSWindows=i.contains(["Windows","Win16","Win32","WinCE"],n),t.isLinux=n.indexOf("Linux")>=0},function(e,t,r){"use strict";function i(e,t){if(null==e.pageX)return null;for(var r=e.pageX,i=e.pageY;t&&t!==self.document.documentElement;)r-=t.offsetLeft,i-=t.offsetTop,t="offsetParent"in t?t.offsetParent:t.parentElement;return[r,i]}function o(e,t,r,o,s,n){var a=i(e,t);return a[0]=Math.ceil((a[0]+(n?r.width/2:0))/r.width),a[1]=Math.ceil(a[1]/r.height),a[0]=Math.min(Math.max(a[0],1),o+1),a[1]=Math.min(Math.max(a[1],1),s+1),a}Object.defineProperty(t,"__esModule",{value:!0}),t.getCoordsRelativeToElement=i,t.getCoords=o,t.getRawByteCoords=function(e,t,r,i,s){var n=o(e,t,r,i,s),a=n[0],l=n[1];return a+=32,l+=32,{x:a,y:l}}},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=r(3),o=function(){function e(e){this.elem=e,i.hterm.defaultStorage=new i.lib.Storage.Memory,this.term=new i.hterm.Terminal,this.term.getPrefs().set("send-encoding","raw"),this.term.decorate(this.elem),this.io=this.term.io.push(),this.term.installKeyboard()}return e.prototype.info=function(){return{columns:this.columns,rows:this.rows}},e.prototype.output=function(e){null!=this.term.io&&this.term.io.writeUTF8(e)},e.prototype.showMessage=function(e,t){this.message=e,t>0?this.term.io.showOverlay(e,t):this.term.io.showOverlay(e,null)},e.prototype.removeMessage=function(){this.term.io.showOverlay(this.message,0)},e.prototype.setWindowTitle=function(e){this.term.setWindowTitle(e)},e.prototype.setPreferences=function(e){var t=this;Object.keys(e).forEach(function(r){t.term.getPrefs().set(r,e[r])})},e.prototype.onInput=function(e){this.io.onVTKeystroke=function(t){e(t)},this.io.sendString=function(t){e(t)}},e.prototype.onResize=function(e){var t=this;this.io.onTerminalResize=function(r,i){t.columns=r,t.rows=i,e(r,i)}},e.prototype.deactivate=function(){this.io.onVTKeystroke=null,this.io.sendString=null,this.io.onTerminalResize=null,this.term.uninstallKeyboard()},e.prototype.reset=function(){this.removeMessage(),this.term.installKeyboard()},e.prototype.close=function(){this.term.uninstallKeyboard()},e}();t.Hterm=o},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=function(){function e(e,t){this.url=e,this.protocols=t}return e.prototype.create=function(){return new o(this.url,this.protocols)},e}();t.ConnectionFactory=i;var o=function(){function e(e,t){this.bare=new WebSocket(e,t)}return e.prototype.open=function(){},e.prototype.close=function(){this.bare.close()},e.prototype.send=function(e){this.bare.send(e)},e.prototype.isOpen=function(){return this.bare.readyState==WebSocket.CONNECTING||this.bare.readyState==WebSocket.OPEN},e.prototype.onOpen=function(e){this.bare.onopen=function(t){e()}},e.prototype.onReceive=function(e){this.bare.onmessage=function(t){e(t.data)}},e.prototype.onClose=function(e){this.bare.onclose=function(t){e()}},e}();t.Connection=o},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0}),t.protocols=["webtty"],t.msgInputUnknown="0",t.msgInput="1",t.msgPing="2",t.msgResizeTerminal="3",t.msgUnknownOutput="0",t.msgOutput="1",t.msgPong="2",t.msgSetWindowTitle="3",t.msgSetPreferences="4",t.msgSetReconnect="5";var i=function(){function e(e,t,r,i){this.term=e,this.connectionFactory=t,this.args=r,this.authToken=i,this.reconnect=-1}return e.prototype.open=function(){var e,r,i=this,o=this.connectionFactory.create(),s=function(){o.onOpen(function(){var r=i.term.info();o.send(JSON.stringify({Arguments:i.args,AuthToken:i.authToken}));var s=function(e,r){o.send(t.msgResizeTerminal+JSON.stringify({columns:e,rows:r}))};i.term.onResize(s),s(r.columns,r.rows),i.term.onInput(function(e){o.send(t.msgInput+e)}),e=setInterval(function(){o.send(t.msgPing)},3e4)}),o.onReceive(function(e){var r=e.slice(1);switch(e[0]){case t.msgOutput:i.term.output(atob(r));break;case t.msgPong:break;case t.msgSetWindowTitle:i.term.setWindowTitle(r);break;case t.msgSetPreferences:var o=JSON.parse(r);i.term.setPreferences(o);break;case t.msgSetReconnect:var s=JSON.parse(r);console.log("Enabling reconnect: "+s+" seconds"),i.reconnect=s}}),o.onClose(function(){clearInterval(e),i.term.deactivate(),i.term.showMessage("Connection Closed",0),i.reconnect>0&&(r=setTimeout(function(){o=i.connectionFactory.create(),i.term.reset(),s()},1e3*i.reconnect))}),o.open()};return s(),function(){clearTimeout(r),o.close()}},e}();t.WebTTY=i},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=r(0),o=r(3);i.loadAddon("fit");var s=function(){function e(e){var t=this;this.elem=e,this.term=new i,this.message=e.ownerDocument.createElement("div"),this.message.className="xterm-overlay",this.messageTimeout=2e3,this.resizeListener=function(){t.term.fit(),t.term.scrollToBottom(),t.showMessage(String(t.term.cols)+"x"+String(t.term.rows),t.messageTimeout)},this.term.on("open",function(){t.resizeListener(),window.addEventListener("resize",function(){t.resizeListener()})}),this.term.open(e,!0),this.decoder=new o.lib.UTF8Decoder}return e.prototype.info=function(){return{columns:this.term.cols,rows:this.term.rows}},e.prototype.output=function(e){this.term.write(this.decoder.decode(e))},e.prototype.showMessage=function(e,t){var r=this;this.message.textContent=e,this.elem.appendChild(this.message),this.messageTimer&&clearTimeout(this.messageTimer),t>0&&(this.messageTimer=setTimeout(function(){r.elem.removeChild(r.message)},t))},e.prototype.removeMessage=function(){this.message.parentNode==this.elem&&this.elem.removeChild(this.message)},e.prototype.setWindowTitle=function(e){document.title=e},e.prototype.setPreferences=function(e){},e.prototype.onInput=function(e){this.term.on("data",function(t){e(t)})},e.prototype.onResize=function(e){this.term.on("resize",function(t){e(t.cols,t.rows)})},e.prototype.deactivate=function(){this.term.off("data"),this.term.off("resize"),this.term.blur()},e.prototype.reset=function(){this.removeMessage(),this.term.clear()},e.prototype.close=function(){window.removeEventListener("resize",this.resizeListener),this.term.destroy()},e}();t.Xterm=s},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=function(){function e(e,t,r){this.textarea=e,this.compositionView=t,this.terminal=r,this.isComposing=!1,this.isSendingComposition=!1,this.compositionPosition={start:null,end:null}}return e.prototype.compositionstart=function(){this.isComposing=!0,this.compositionPosition.start=this.textarea.value.length,this.compositionView.textContent="",this.compositionView.classList.add("active")},e.prototype.compositionupdate=function(e){var t=this;this.compositionView.textContent=e.data,this.updateCompositionElements(),setTimeout(function(){t.compositionPosition.end=t.textarea.value.length},0)},e.prototype.compositionend=function(){this.finalizeComposition(!0)},e.prototype.keydown=function(e){if(this.isComposing||this.isSendingComposition){if(229===e.keyCode)return!1;if(16===e.keyCode||17===e.keyCode||18===e.keyCode)return!1;this.finalizeComposition(!1)}return 229!==e.keyCode||(this.handleAnyTextareaChanges(),!1)},e.prototype.finalizeComposition=function(e){var t=this;if(this.compositionView.classList.remove("active"),this.isComposing=!1,this.clearTextareaPosition(),e){var r={start:this.compositionPosition.start,end:this.compositionPosition.end};this.isSendingComposition=!0,setTimeout(function(){if(t.isSendingComposition){t.isSendingComposition=!1;var e=void 0;e=t.isComposing?t.textarea.value.substring(r.start,r.end):t.textarea.value.substring(r.start),t.terminal.handler(e)}},0)}else{this.isSendingComposition=!1;var i=this.textarea.value.substring(this.compositionPosition.start,this.compositionPosition.end);this.terminal.handler(i)}},e.prototype.handleAnyTextareaChanges=function(){var e=this,t=this.textarea.value;setTimeout(function(){if(!e.isComposing){var r=e.textarea.value.replace(t,"");r.length>0&&e.terminal.handler(r)}},0)},e.prototype.updateCompositionElements=function(e){var t=this;if(this.isComposing){var r=this.terminal.element.querySelector(".terminal-cursor");if(r){var i=this.terminal.element.querySelector(".xterm-rows").offsetTop+r.offsetTop;this.compositionView.style.left=r.offsetLeft+"px",this.compositionView.style.top=i+"px",this.compositionView.style.height=r.offsetHeight+"px",this.compositionView.style.lineHeight=r.offsetHeight+"px";var o=this.compositionView.getBoundingClientRect();this.textarea.style.left=r.offsetLeft+"px",this.textarea.style.top=i+"px",this.textarea.style.width=o.width+"px",this.textarea.style.height=o.height+"px",this.textarea.style.lineHeight=o.height+"px"}e||setTimeout(function(){return t.updateCompositionElements(!0)},0)}},e.prototype.clearTextareaPosition=function(){this.textarea.style.left="",this.textarea.style.top=""},e}();t.CompositionHelper=i},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=r(2),o=r(4),s=function(){function e(e){this._terminal=e}return e.prototype.addChar=function(e,t){if(e>=" "){var r=n(t);this._terminal.charset&&this._terminal.charset[e]&&(e=this._terminal.charset[e]);var i=this._terminal.y+this._terminal.ybase;if(!r&&this._terminal.x)return void(this._terminal.lines.get(i)[this._terminal.x-1]&&(this._terminal.lines.get(i)[this._terminal.x-1][2]?this._terminal.lines.get(i)[this._terminal.x-1][1]+=e:this._terminal.lines.get(i)[this._terminal.x-2]&&(this._terminal.lines.get(i)[this._terminal.x-2][1]+=e),this._terminal.updateRange(this._terminal.y)));if(this._terminal.x+r-1>=this._terminal.cols)if(this._terminal.wraparoundMode)this._terminal.x=0,++this._terminal.y>this._terminal.scrollBottom?(this._terminal.y--,this._terminal.scroll(!0)):this._terminal.lines.get(this._terminal.y).isWrapped=!0;else if(2===r)return;if(i=this._terminal.y+this._terminal.ybase,this._terminal.insertMode)for(var o=0;o<r;++o)0===this._terminal.lines.get(this._terminal.y+this._terminal.ybase).pop()[2]&&this._terminal.lines.get(i)[this._terminal.cols-2]&&2===this._terminal.lines.get(i)[this._terminal.cols-2][2]&&(this._terminal.lines.get(i)[this._terminal.cols-2]=[this._terminal.curAttr," ",1]),this._terminal.lines.get(i).splice(this._terminal.x,0,[this._terminal.curAttr," ",1]);this._terminal.lines.get(i)[this._terminal.x]=[this._terminal.curAttr,e,r],this._terminal.x++,this._terminal.updateRange(this._terminal.y),2===r&&(this._terminal.lines.get(i)[this._terminal.x]=[this._terminal.curAttr,"",0],this._terminal.x++)}},e.prototype.bell=function(){var e=this;this._terminal.visualBell&&(this._terminal.element.style.borderColor="white",setTimeout(function(){return e._terminal.element.style.borderColor=""},10),this._terminal.popOnBell&&this._terminal.focus())},e.prototype.lineFeed=function(){this._terminal.convertEol&&(this._terminal.x=0),++this._terminal.y>this._terminal.scrollBottom&&(this._terminal.y--,this._terminal.scroll()),this._terminal.x>=this._terminal.cols&&this._terminal.x--},e.prototype.carriageReturn=function(){this._terminal.x=0},e.prototype.backspace=function(){this._terminal.x>0&&this._terminal.x--},e.prototype.tab=function(){this._terminal.x=this._terminal.nextStop()},e.prototype.shiftOut=function(){this._terminal.setgLevel(1)},e.prototype.shiftIn=function(){this._terminal.setgLevel(0)},e.prototype.insertChars=function(e){var t,r,i,o;for((t=e[0])<1&&(t=1),r=this._terminal.y+this._terminal.ybase,i=this._terminal.x,o=[this._terminal.eraseAttr()," ",1];t--&&i<this._terminal.cols;)this._terminal.lines.get(r).splice(i++,0,o),this._terminal.lines.get(r).pop()},e.prototype.cursorUp=function(e){var t=e[0];t<1&&(t=1),this._terminal.y-=t,this._terminal.y<0&&(this._terminal.y=0)},e.prototype.cursorDown=function(e){var t=e[0];t<1&&(t=1),this._terminal.y+=t,this._terminal.y>=this._terminal.rows&&(this._terminal.y=this._terminal.rows-1),this._terminal.x>=this._terminal.cols&&this._terminal.x--},e.prototype.cursorForward=function(e){var t=e[0];t<1&&(t=1),this._terminal.x+=t,this._terminal.x>=this._terminal.cols&&(this._terminal.x=this._terminal.cols-1)},e.prototype.cursorBackward=function(e){var t=e[0];t<1&&(t=1),this._terminal.x>=this._terminal.cols&&this._terminal.x--,this._terminal.x-=t,this._terminal.x<0&&(this._terminal.x=0)},e.prototype.cursorNextLine=function(e){var t=e[0];t<1&&(t=1),this._terminal.y+=t,this._terminal.y>=this._terminal.rows&&(this._terminal.y=this._terminal.rows-1),this._terminal.x=0},e.prototype.cursorPrecedingLine=function(e){var t=e[0];t<1&&(t=1),this._terminal.y-=t,this._terminal.y<0&&(this._terminal.y=0),this._terminal.x=0},e.prototype.cursorCharAbsolute=function(e){var t=e[0];t<1&&(t=1),this._terminal.x=t-1},e.prototype.cursorPosition=function(e){var t,r;t=e[0]-1,r=e.length>=2?e[1]-1:0,t<0?t=0:t>=this._terminal.rows&&(t=this._terminal.rows-1),r<0?r=0:r>=this._terminal.cols&&(r=this._terminal.cols-1),this._terminal.x=r,this._terminal.y=t},e.prototype.cursorForwardTab=function(e){for(var t=e[0]||1;t--;)this._terminal.x=this._terminal.nextStop()},e.prototype.eraseInDisplay=function(e){var t;switch(e[0]){case 0:for(this._terminal.eraseRight(this._terminal.x,this._terminal.y),t=this._terminal.y+1;t<this._terminal.rows;t++)this._terminal.eraseLine(t);break;case 1:for(this._terminal.eraseLeft(this._terminal.x,this._terminal.y),t=this._terminal.y;t--;)this._terminal.eraseLine(t);break;case 2:for(t=this._terminal.rows;t--;)this._terminal.eraseLine(t);break;case 3:var r=this._terminal.lines.length-this._terminal.rows;r>0&&(this._terminal.lines.trimStart(r),this._terminal.ybase=Math.max(this._terminal.ybase-r,0),this._terminal.ydisp=Math.max(this._terminal.ydisp-r,0))}},e.prototype.eraseInLine=function(e){switch(e[0]){case 0:this._terminal.eraseRight(this._terminal.x,this._terminal.y);break;case 1:this._terminal.eraseLeft(this._terminal.x,this._terminal.y);break;case 2:this._terminal.eraseLine(this._terminal.y)}},e.prototype.insertLines=function(e){var t,r,i;for((t=e[0])<1&&(t=1),r=this._terminal.y+this._terminal.ybase,i=this._terminal.rows-1-this._terminal.scrollBottom,i=this._terminal.rows-1+this._terminal.ybase-i+1;t--;)this._terminal.lines.length===this._terminal.lines.maxLength&&(this._terminal.lines.trimStart(1),this._terminal.ybase--,this._terminal.ydisp--,r--,i--),this._terminal.lines.splice(r,0,this._terminal.blankLine(!0)),this._terminal.lines.splice(i,1);this._terminal.updateRange(this._terminal.y),this._terminal.updateRange(this._terminal.scrollBottom)},e.prototype.deleteLines=function(e){var t,r,i;for((t=e[0])<1&&(t=1),r=this._terminal.y+this._terminal.ybase,i=this._terminal.rows-1-this._terminal.scrollBottom,i=this._terminal.rows-1+this._terminal.ybase-i;t--;)this._terminal.lines.length===this._terminal.lines.maxLength&&(this._terminal.lines.trimStart(1),this._terminal.ybase-=1,this._terminal.ydisp-=1),this._terminal.lines.splice(i+1,0,this._terminal.blankLine(!0)),this._terminal.lines.splice(r,1);this._terminal.updateRange(this._terminal.y),this._terminal.updateRange(this._terminal.scrollBottom)},e.prototype.deleteChars=function(e){var t,r,i;for((t=e[0])<1&&(t=1),r=this._terminal.y+this._terminal.ybase,i=[this._terminal.eraseAttr()," ",1];t--;)this._terminal.lines.get(r).splice(this._terminal.x,1),this._terminal.lines.get(r).push(i)},e.prototype.scrollUp=function(e){for(var t=e[0]||1;t--;)this._terminal.lines.splice(this._terminal.ybase+this._terminal.scrollTop,1),this._terminal.lines.splice(this._terminal.ybase+this._terminal.scrollBottom,0,this._terminal.blankLine());this._terminal.updateRange(this._terminal.scrollTop),this._terminal.updateRange(this._terminal.scrollBottom)},e.prototype.scrollDown=function(e){for(var t=e[0]||1;t--;)this._terminal.lines.splice(this._terminal.ybase+this._terminal.scrollBottom,1),this._terminal.lines.splice(this._terminal.ybase+this._terminal.scrollTop,0,this._terminal.blankLine());this._terminal.updateRange(this._terminal.scrollTop),this._terminal.updateRange(this._terminal.scrollBottom)},e.prototype.eraseChars=function(e){var t,r,i,o;for((t=e[0])<1&&(t=1),r=this._terminal.y+this._terminal.ybase,i=this._terminal.x,o=[this._terminal.eraseAttr()," ",1];t--&&i<this._terminal.cols;)this._terminal.lines.get(r)[i++]=o},e.prototype.cursorBackwardTab=function(e){for(var t=e[0]||1;t--;)this._terminal.x=this._terminal.prevStop()},e.prototype.charPosAbsolute=function(e){var t=e[0];t<1&&(t=1),this._terminal.x=t-1,this._terminal.x>=this._terminal.cols&&(this._terminal.x=this._terminal.cols-1)},e.prototype.HPositionRelative=function(e){var t=e[0];t<1&&(t=1),this._terminal.x+=t,this._terminal.x>=this._terminal.cols&&(this._terminal.x=this._terminal.cols-1)},e.prototype.repeatPrecedingCharacter=function(e){for(var t=e[0]||1,r=this._terminal.lines.get(this._terminal.ybase+this._terminal.y),i=r[this._terminal.x-1]||[this._terminal.defAttr," ",1];t--;)r[this._terminal.x++]=i},e.prototype.sendDeviceAttributes=function(e){e[0]>0||(this._terminal.prefix?">"===this._terminal.prefix&&(this._terminal.is("xterm")?this._terminal.send(i.C0.ESC+"[>0;276;0c"):this._terminal.is("rxvt-unicode")?this._terminal.send(i.C0.ESC+"[>85;95;0c"):this._terminal.is("linux")?this._terminal.send(e[0]+"c"):this._terminal.is("screen")&&this._terminal.send(i.C0.ESC+"[>83;40003;0c")):this._terminal.is("xterm")||this._terminal.is("rxvt-unicode")||this._terminal.is("screen")?this._terminal.send(i.C0.ESC+"[?1;2c"):this._terminal.is("linux")&&this._terminal.send(i.C0.ESC+"[?6c"))},e.prototype.linePosAbsolute=function(e){var t=e[0];t<1&&(t=1),this._terminal.y=t-1,this._terminal.y>=this._terminal.rows&&(this._terminal.y=this._terminal.rows-1)},e.prototype.VPositionRelative=function(e){var t=e[0];t<1&&(t=1),this._terminal.y+=t,this._terminal.y>=this._terminal.rows&&(this._terminal.y=this._terminal.rows-1),this._terminal.x>=this._terminal.cols&&this._terminal.x--},e.prototype.HVPosition=function(e){e[0]<1&&(e[0]=1),e[1]<1&&(e[1]=1),this._terminal.y=e[0]-1,this._terminal.y>=this._terminal.rows&&(this._terminal.y=this._terminal.rows-1),this._terminal.x=e[1]-1,this._terminal.x>=this._terminal.cols&&(this._terminal.x=this._terminal.cols-1)},e.prototype.tabClear=function(e){var t=e[0];t<=0?delete this._terminal.tabs[this._terminal.x]:3===t&&(this._terminal.tabs={})},e.prototype.setMode=function(e){if(e.length>1)for(var t=0;t<e.length;t++)this.setMode([e[t]]);else if(this._terminal.prefix){if("?"===this._terminal.prefix)switch(e[0]){case 1:this._terminal.applicationCursor=!0;break;case 2:this._terminal.setgCharset(0,o.DEFAULT_CHARSET),this._terminal.setgCharset(1,o.DEFAULT_CHARSET),this._terminal.setgCharset(2,o.DEFAULT_CHARSET),this._terminal.setgCharset(3,o.DEFAULT_CHARSET);break;case 3:this._terminal.savedCols=this._terminal.cols,this._terminal.resize(132,this._terminal.rows);break;case 6:this._terminal.originMode=!0;break;case 7:this._terminal.wraparoundMode=!0;break;case 12:break;case 66:this._terminal.log("Serial port requested application keypad."),this._terminal.applicationKeypad=!0,this._terminal.viewport.syncScrollArea();break;case 9:case 1e3:case 1002:case 1003:this._terminal.x10Mouse=9===e[0],this._terminal.vt200Mouse=1e3===e[0],this._terminal.normalMouse=e[0]>1e3,this._terminal.mouseEvents=!0,this._terminal.element.classList.add("enable-mouse-events"),this._terminal.selectionManager.disable(),this._terminal.log("Binding to mouse events.");break;case 1004:this._terminal.sendFocus=!0;break;case 1005:this._terminal.utfMouse=!0;break;case 1006:this._terminal.sgrMouse=!0;break;case 1015:this._terminal.urxvtMouse=!0;break;case 25:this._terminal.cursorHidden=!1;break;case 1049:case 47:case 1047:if(!this._terminal.normal){var r={lines:this._terminal.lines,ybase:this._terminal.ybase,ydisp:this._terminal.ydisp,x:this._terminal.x,y:this._terminal.y,scrollTop:this._terminal.scrollTop,scrollBottom:this._terminal.scrollBottom,tabs:this._terminal.tabs};this._terminal.reset(),this._terminal.viewport.syncScrollArea(),this._terminal.normal=r,this._terminal.showCursor()}}}else switch(e[0]){case 4:this._terminal.insertMode=!0}},e.prototype.resetMode=function(e){if(e.length>1)for(var t=0;t<e.length;t++)this.resetMode([e[t]]);else if(this._terminal.prefix){if("?"===this._terminal.prefix)switch(e[0]){case 1:this._terminal.applicationCursor=!1;break;case 3:132===this._terminal.cols&&this._terminal.savedCols&&this._terminal.resize(this._terminal.savedCols,this._terminal.rows),delete this._terminal.savedCols;break;case 6:this._terminal.originMode=!1;break;case 7:this._terminal.wraparoundMode=!1;break;case 12:break;case 66:this._terminal.log("Switching back to normal keypad."),this._terminal.applicationKeypad=!1,this._terminal.viewport.syncScrollArea();break;case 9:case 1e3:case 1002:case 1003:this._terminal.x10Mouse=!1,this._terminal.vt200Mouse=!1,this._terminal.normalMouse=!1,this._terminal.mouseEvents=!1,this._terminal.element.classList.remove("enable-mouse-events"),this._terminal.selectionManager.enable();break;case 1004:this._terminal.sendFocus=!1;break;case 1005:this._terminal.utfMouse=!1;break;case 1006:this._terminal.sgrMouse=!1;break;case 1015:this._terminal.urxvtMouse=!1;break;case 25:this._terminal.cursorHidden=!0;break;case 1049:case 47:case 1047:this._terminal.normal&&(this._terminal.lines=this._terminal.normal.lines,this._terminal.ybase=this._terminal.normal.ybase,this._terminal.ydisp=this._terminal.normal.ydisp,this._terminal.x=this._terminal.normal.x,this._terminal.y=this._terminal.normal.y,this._terminal.scrollTop=this._terminal.normal.scrollTop,this._terminal.scrollBottom=this._terminal.normal.scrollBottom,this._terminal.tabs=this._terminal.normal.tabs,this._terminal.normal=null,this._terminal.selectionManager.setBuffer(this._terminal.lines),this._terminal.refresh(0,this._terminal.rows-1),this._terminal.viewport.syncScrollArea(),this._terminal.showCursor())}}else switch(e[0]){case 4:this._terminal.insertMode=!1}},e.prototype.charAttributes=function(e){if(1!==e.length||0!==e[0]){for(var t,r=e.length,i=0,o=this._terminal.curAttr>>18,s=this._terminal.curAttr>>9&511,n=511&this._terminal.curAttr;i<r;i++)(t=e[i])>=30&&t<=37?s=t-30:t>=40&&t<=47?n=t-40:t>=90&&t<=97?s=(t+=8)-90:t>=100&&t<=107?n=(t+=8)-100:0===t?(o=this._terminal.defAttr>>18,s=this._terminal.defAttr>>9&511,n=511&this._terminal.defAttr):1===t?o|=1:4===t?o|=2:5===t?o|=4:7===t?o|=8:8===t?o|=16:22===t?o&=-2:24===t?o&=-3:25===t?o&=-5:27===t?o&=-9:28===t?o&=-17:39===t?s=this._terminal.defAttr>>9&511:49===t?n=511&this._terminal.defAttr:38===t?2===e[i+1]?(i+=2,-1===(s=this._terminal.matchColor(255&e[i],255&e[i+1],255&e[i+2]))&&(s=511),i+=2):5===e[i+1]&&(s=t=255&e[i+=2]):48===t?2===e[i+1]?(i+=2,-1===(n=this._terminal.matchColor(255&e[i],255&e[i+1],255&e[i+2]))&&(n=511),i+=2):5===e[i+1]&&(n=t=255&e[i+=2]):100===t?(s=this._terminal.defAttr>>9&511,n=511&this._terminal.defAttr):this._terminal.error("Unknown SGR attribute: %d.",t);this._terminal.curAttr=o<<18|s<<9|n}else this._terminal.curAttr=this._terminal.defAttr},e.prototype.deviceStatus=function(e){if(this._terminal.prefix){if("?"===this._terminal.prefix)switch(e[0]){case 6:this._terminal.send(i.C0.ESC+"[?"+(this._terminal.y+1)+";"+(this._terminal.x+1)+"R")}}else switch(e[0]){case 5:this._terminal.send(i.C0.ESC+"[0n");break;case 6:this._terminal.send(i.C0.ESC+"["+(this._terminal.y+1)+";"+(this._terminal.x+1)+"R")}},e.prototype.softReset=function(e){this._terminal.cursorHidden=!1,this._terminal.insertMode=!1,this._terminal.originMode=!1,this._terminal.wraparoundMode=!0,this._terminal.applicationKeypad=!1,this._terminal.viewport.syncScrollArea(),this._terminal.applicationCursor=!1,this._terminal.scrollTop=0,this._terminal.scrollBottom=this._terminal.rows-1,this._terminal.curAttr=this._terminal.defAttr,this._terminal.x=this._terminal.y=0,this._terminal.charset=null,this._terminal.glevel=0,this._terminal.charsets=[null]},e.prototype.setCursorStyle=function(e){var t=e[0]<1?1:e[0];switch(t){case 1:case 2:this._terminal.setOption("cursorStyle","block");break;case 3:case 4:this._terminal.setOption("cursorStyle","underline");break;case 5:case 6:this._terminal.setOption("cursorStyle","bar")}var r=t%2==1;this._terminal.setOption("cursorBlink",r)},e.prototype.setScrollRegion=function(e){this._terminal.prefix||(this._terminal.scrollTop=(e[0]||1)-1,this._terminal.scrollBottom=(e[1]&&e[1]<=this._terminal.rows?e[1]:this._terminal.rows)-1,this._terminal.x=0,this._terminal.y=0)},e.prototype.saveCursor=function(e){this._terminal.savedX=this._terminal.x,this._terminal.savedY=this._terminal.y},e.prototype.restoreCursor=function(e){this._terminal.x=this._terminal.savedX||0,this._terminal.y=this._terminal.savedY||0},e}();t.InputHandler=s;var n=function(e){function t(e){var t,r=0,o=i.length-1;if(e<i[0][0]||e>i[o][1])return!1;for(;o>=r;)if(t=Math.floor((r+o)/2),e>i[t][1])r=t+1;else{if(!(e<i[t][0]))return!0;o=t-1}return!1}function r(e){return e>=4352&&(e<=4447||9001===e||9002===e||e>=11904&&e<=42191&&12351!==e||e>=44032&&e<=55203||e>=63744&&e<=64255||e>=65040&&e<=65049||e>=65072&&e<=65135||e>=65280&&e<=65376||e>=65504&&e<=65510||e>=131072&&e<=196605||e>=196608&&e<=262141)}var i=[[768,879],[1155,1158],[1160,1161],[1425,1469],[1471,1471],[1473,1474],[1476,1477],[1479,1479],[1536,1539],[1552,1557],[1611,1630],[1648,1648],[1750,1764],[1767,1768],[1770,1773],[1807,1807],[1809,1809],[1840,1866],[1958,1968],[2027,2035],[2305,2306],[2364,2364],[2369,2376],[2381,2381],[2385,2388],[2402,2403],[2433,2433],[2492,2492],[2497,2500],[2509,2509],[2530,2531],[2561,2562],[2620,2620],[2625,2626],[2631,2632],[2635,2637],[2672,2673],[2689,2690],[2748,2748],[2753,2757],[2759,2760],[2765,2765],[2786,2787],[2817,2817],[2876,2876],[2879,2879],[2881,2883],[2893,2893],[2902,2902],[2946,2946],[3008,3008],[3021,3021],[3134,3136],[3142,3144],[3146,3149],[3157,3158],[3260,3260],[3263,3263],[3270,3270],[3276,3277],[3298,3299],[3393,3395],[3405,3405],[3530,3530],[3538,3540],[3542,3542],[3633,3633],[3636,3642],[3655,3662],[3761,3761],[3764,3769],[3771,3772],[3784,3789],[3864,3865],[3893,3893],[3895,3895],[3897,3897],[3953,3966],[3968,3972],[3974,3975],[3984,3991],[3993,4028],[4038,4038],[4141,4144],[4146,4146],[4150,4151],[4153,4153],[4184,4185],[4448,4607],[4959,4959],[5906,5908],[5938,5940],[5970,5971],[6002,6003],[6068,6069],[6071,6077],[6086,6086],[6089,6099],[6109,6109],[6155,6157],[6313,6313],[6432,6434],[6439,6440],[6450,6450],[6457,6459],[6679,6680],[6912,6915],[6964,6964],[6966,6970],[6972,6972],[6978,6978],[7019,7027],[7616,7626],[7678,7679],[8203,8207],[8234,8238],[8288,8291],[8298,8303],[8400,8431],[12330,12335],[12441,12442],[43014,43014],[43019,43019],[43045,43046],[64286,64286],[65024,65039],[65056,65059],[65279,65279],[65529,65531],[68097,68099],[68101,68102],[68108,68111],[68152,68154],[68159,68159],[119143,119145],[119155,119170],[119173,119179],[119210,119213],[119362,119364],[917505,917505],[917536,917631],[917760,917999]];return function(i){return 0===i?e.nul:i<32||i>=127&&i<160?e.control:t(i)?0:r(i)?2:1}}({nul:0,control:0})},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=new RegExp("(?:^|[^\\da-z\\.-]+)((https?:\\/\\/)((([\\da-z\\.-]+)\\.([a-z\\.]{2,6}))|((\\d{1,3}\\.){3}\\d{1,3})|(localhost))(:\\d{1,5})?(\\/[\\/\\w\\.\\-%~]*)*(\\?[0-9\\w\\[\\]\\(\\)\\/\\?\\!#@$%&'*+,:;~\\=\\.\\-]*)?(#[0-9\\w\\[\\]\\(\\)\\/\\?\\!#@$%&'*+,:;~\\=\\.\\-]*)?)($|[^\\/\\w\\.\\-%]+)"),o=0,s=function(){function e(){this._nextLinkMatcherId=o,this._rowTimeoutIds=[],this._linkMatchers=[],this.registerLinkMatcher(i,null,{matchIndex:1})}return e.prototype.attachToDom=function(e,t){this._document=e,this._rows=t},e.prototype.linkifyRow=function(t){if(this._document){var r=this._rowTimeoutIds[t];r&&clearTimeout(r),this._rowTimeoutIds[t]=setTimeout(this._linkifyRow.bind(this,t),e.TIME_BEFORE_LINKIFY)}},e.prototype.setHypertextLinkHandler=function(e){this._linkMatchers[o].handler=e},e.prototype.setHypertextValidationCallback=function(e){this._linkMatchers[o].validationCallback=e},e.prototype.registerLinkMatcher=function(e,t,r){if(void 0===r&&(r={}),this._nextLinkMatcherId!==o&&!t)throw new Error("handler must be defined");var i={id:this._nextLinkMatcherId++,regex:e,handler:t,matchIndex:r.matchIndex,validationCallback:r.validationCallback,priority:r.priority||0};return this._addLinkMatcherToList(i),i.id},e.prototype._addLinkMatcherToList=function(e){if(0!==this._linkMatchers.length){for(var t=this._linkMatchers.length-1;t>=0;t--)if(e.priority<=this._linkMatchers[t].priority)return void this._linkMatchers.splice(t+1,0,e);this._linkMatchers.splice(0,0,e)}else this._linkMatchers.push(e)},e.prototype.deregisterLinkMatcher=function(e){for(var t=1;t<this._linkMatchers.length;t++)if(this._linkMatchers[t].id===e)return this._linkMatchers.splice(t,1),!0;return!1},e.prototype._linkifyRow=function(e){var t=this._rows[e];if(t){t.textContent;for(var r=0;r<this._linkMatchers.length;r++){var i=this._linkMatchers[r],o=this._doLinkifyRow(t,i);if(o.length>0){if(i.validationCallback)for(var s=function(e){var t=o[e];i.validationCallback(t.textContent,t,function(e){e||t.classList.add("xterm-invalid-link")})},n=0;n<o.length;n++)s(n);return}}}},e.prototype._doLinkifyRow=function(e,t){var r=[],i=t.id===o,s=e.childNodes,n=e.textContent.match(t.regex);if(!n||0===n.length)return r;for(var a=n["number"!=typeof t.matchIndex?0:t.matchIndex],l=n.index+a.length,h=0;h<s.length;h++){var c=s[h],u=c.textContent.indexOf(a);if(u>=0){var d=this._createAnchorElement(a,t.handler,i);if(c.textContent.length===a.length)if(3===c.nodeType)this._replaceNode(c,d);else{var p=c;if("A"===p.nodeName)return r;p.innerHTML="",p.appendChild(d)}else if(c.childNodes.length>1)for(var f=0;f<c.childNodes.length;f++){var g=c.childNodes[f],m=g.textContent.indexOf(a);if(-1!==m){this._replaceNodeSubstringWithNode(g,d,a,m);break}}else h+=this._replaceNodeSubstringWithNode(c,d,a,u);if(r.push(d),!(n=e.textContent.substring(l).match(t.regex))||0===n.length)return r;a=n["number"!=typeof t.matchIndex?0:t.matchIndex],l+=n.index+a.length}}return r},e.prototype._createAnchorElement=function(e,t,r){var i=this._document.createElement("a");return i.textContent=e,i.draggable=!1,r?(i.href=e,i.target="_blank",i.addEventListener("click",function(r){if(t)return t(r,e)})):i.addEventListener("click",function(r){if(!i.classList.contains("xterm-invalid-link"))return t(r,e)}),i},e.prototype._replaceNode=function(e){for(var t=[],r=1;r<arguments.length;r++)t[r-1]=arguments[r];for(var i=e.parentNode,o=0;o<t.length;o++)i.insertBefore(t[o],e);i.removeChild(e)},e.prototype._replaceNodeSubstringWithNode=function(e,t,r,i){if(1===e.childNodes.length&&(e=e.childNodes[0]),3!==e.nodeType)throw new Error("targetNode must be a text node or only contain a single text node");var o=e.textContent;if(0===i){var s=o.substring(r.length),n=this._document.createTextNode(s);return this._replaceNode(e,t,n),0}if(i===e.textContent.length-r.length){var a=o.substring(0,i),l=this._document.createTextNode(a);return this._replaceNode(e,l,t),0}var h=o.substring(0,i),c=this._document.createTextNode(h),u=o.substring(i+r.length),d=this._document.createTextNode(u);return this._replaceNode(e,c,t,d),1},e}();s.TIME_BEFORE_LINKIFY=200,t.Linkifier=s},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=r(2),o=r(4),s={};s[i.C0.BEL]=function(e,t){return t.bell()},s[i.C0.LF]=function(e,t){return t.lineFeed()},s[i.C0.VT]=s[i.C0.LF],s[i.C0.FF]=s[i.C0.LF],s[i.C0.CR]=function(e,t){return t.carriageReturn()},s[i.C0.BS]=function(e,t){return t.backspace()},s[i.C0.HT]=function(e,t){return t.tab()},s[i.C0.SO]=function(e,t){return t.shiftOut()},s[i.C0.SI]=function(e,t){return t.shiftIn()},s[i.C0.ESC]=function(e,t){return e.setState(h.ESCAPED)};var n={};n["["]=function(e,t){t.params=[],t.currentParam=0,e.setState(h.CSI_PARAM)},n["]"]=function(e,t){t.params=[],t.currentParam=0,e.setState(h.OSC)},n.P=function(e,t){t.params=[],t.currentParam=0,e.setState(h.DCS)},n._=function(e,t){e.setState(h.IGNORE)},n["^"]=function(e,t){e.setState(h.IGNORE)},n.c=function(e,t){t.reset()},n.E=function(e,t){t.x=0,t.index(),e.setState(h.NORMAL)},n.D=function(e,t){t.index(),e.setState(h.NORMAL)},n.M=function(e,t){t.reverseIndex(),e.setState(h.NORMAL)},n["%"]=function(e,t){t.setgLevel(0),t.setgCharset(0,o.DEFAULT_CHARSET),e.setState(h.NORMAL),e.skipNextChar()},n[i.C0.CAN]=function(e){return e.setState(h.NORMAL)};var a={};a["?"]=function(e){return e.setPrefix("?")},a[">"]=function(e){return e.setPrefix(">")},a["!"]=function(e){return e.setPrefix("!")},a[0]=function(e){return e.setParam(10*e.getParam())},a[1]=function(e){return e.setParam(10*e.getParam()+1)},a[2]=function(e){return e.setParam(10*e.getParam()+2)},a[3]=function(e){return e.setParam(10*e.getParam()+3)},a[4]=function(e){return e.setParam(10*e.getParam()+4)},a[5]=function(e){return e.setParam(10*e.getParam()+5)},a[6]=function(e){return e.setParam(10*e.getParam()+6)},a[7]=function(e){return e.setParam(10*e.getParam()+7)},a[8]=function(e){return e.setParam(10*e.getParam()+8)},a[9]=function(e){return e.setParam(10*e.getParam()+9)},a.$=function(e){return e.setPostfix("$")},a['"']=function(e){return e.setPostfix('"')},a[" "]=function(e){return e.setPostfix(" ")},a["'"]=function(e){return e.setPostfix("'")},a[";"]=function(e){return e.finalizeParam()},a[i.C0.CAN]=function(e){return e.setState(h.NORMAL)};var l={};l["@"]=function(e,t,r){return e.insertChars(t)},l.A=function(e,t,r){return e.cursorUp(t)},l.B=function(e,t,r){return e.cursorDown(t)},l.C=function(e,t,r){return e.cursorForward(t)},l.D=function(e,t,r){return e.cursorBackward(t)},l.E=function(e,t,r){return e.cursorNextLine(t)},l.F=function(e,t,r){return e.cursorPrecedingLine(t)},l.G=function(e,t,r){return e.cursorCharAbsolute(t)},l.H=function(e,t,r){return e.cursorPosition(t)},l.I=function(e,t,r){return e.cursorForwardTab(t)},l.J=function(e,t,r){return e.eraseInDisplay(t)},l.K=function(e,t,r){return e.eraseInLine(t)},l.L=function(e,t,r){return e.insertLines(t)},l.M=function(e,t,r){return e.deleteLines(t)},l.P=function(e,t,r){return e.deleteChars(t)},l.S=function(e,t,r){return e.scrollUp(t)},l.T=function(e,t,r){t.length<2&&!r&&e.scrollDown(t)},l.X=function(e,t,r){return e.eraseChars(t)},l.Z=function(e,t,r){return e.cursorBackwardTab(t)},l["`"]=function(e,t,r){return e.charPosAbsolute(t)},l.a=function(e,t,r){return e.HPositionRelative(t)},l.b=function(e,t,r){return e.repeatPrecedingCharacter(t)},l.c=function(e,t,r){return e.sendDeviceAttributes(t)},l.d=function(e,t,r){return e.linePosAbsolute(t)},l.e=function(e,t,r){return e.VPositionRelative(t)},l.f=function(e,t,r){return e.HVPosition(t)},l.g=function(e,t,r){return e.tabClear(t)},l.h=function(e,t,r){return e.setMode(t)},l.l=function(e,t,r){return e.resetMode(t)},l.m=function(e,t,r){return e.charAttributes(t)},l.n=function(e,t,r){return e.deviceStatus(t)},l.p=function(e,t,r){switch(r){case"!":e.softReset(t)}},l.q=function(e,t,r,i){" "===i&&e.setCursorStyle(t)},l.r=function(e,t){return e.setScrollRegion(t)},l.s=function(e,t){return e.saveCursor(t)},l.u=function(e,t){return e.restoreCursor(t)},l[i.C0.CAN]=function(e,t,r,i,o){return o.setState(h.NORMAL)};var h;!function(e){e[e.NORMAL=0]="NORMAL",e[e.ESCAPED=1]="ESCAPED",e[e.CSI_PARAM=2]="CSI_PARAM",e[e.CSI=3]="CSI",e[e.OSC=4]="OSC",e[e.CHARSET=5]="CHARSET",e[e.DCS=6]="DCS",e[e.IGNORE=7]="IGNORE"}(h||(h={}));var c=function(){function e(e,t){this._inputHandler=e,this._terminal=t,this._state=h.NORMAL}return e.prototype.parse=function(e){var t,r,c,u,d=e.length;for(this._position=0,this._terminal.surrogate_high&&(e=this._terminal.surrogate_high+e,this._terminal.surrogate_high="");this._position<d;this._position++){if(r=e[this._position],55296<=(c=e.charCodeAt(this._position))&&c<=56319){if(u=e.charCodeAt(this._position+1),isNaN(u)){this._terminal.surrogate_high=r;continue}c=1024*(c-55296)+(u-56320)+65536,r+=e.charAt(this._position+1)}if(!(56320<=c&&c<=57343))switch(this._state){case h.NORMAL:r in s?s[r](this,this._inputHandler):this._inputHandler.addChar(r,c);break;case h.ESCAPED:if(r in n){n[r](this,this._terminal);break}switch(r){case"(":case")":case"*":case"+":case"-":case".":switch(r){case"(":this._terminal.gcharset=0;break;case")":this._terminal.gcharset=1;break;case"*":this._terminal.gcharset=2;break;case"+":this._terminal.gcharset=3;break;case"-":this._terminal.gcharset=1;break;case".":this._terminal.gcharset=2}this._state=h.CHARSET;break;case"/":this._terminal.gcharset=3,this._state=h.CHARSET,this._position--;break;case"N":case"O":break;case"n":this._terminal.setgLevel(2);break;case"o":case"|":this._terminal.setgLevel(3);break;case"}":this._terminal.setgLevel(2);break;case"~":this._terminal.setgLevel(1);break;case"7":this._inputHandler.saveCursor(),this._state=h.NORMAL;break;case"8":this._inputHandler.restoreCursor(),this._state=h.NORMAL;break;case"#":this._state=h.NORMAL,this._position++;break;case"H":this._terminal.tabSet(),this._state=h.NORMAL;break;case"=":this._terminal.log("Serial port requested application keypad."),this._terminal.applicationKeypad=!0,this._terminal.viewport.syncScrollArea(),this._state=h.NORMAL;break;case">":this._terminal.log("Switching back to normal keypad."),this._terminal.applicationKeypad=!1,this._terminal.viewport.syncScrollArea(),this._state=h.NORMAL;break;default:this._state=h.NORMAL,this._terminal.error("Unknown ESC control: %s.",r)}break;case h.CHARSET:r in o.CHARSETS?(t=o.CHARSETS[r],"/"===r&&this.skipNextChar()):t=o.DEFAULT_CHARSET,this._terminal.setgCharset(this._terminal.gcharset,t),this._terminal.gcharset=null,this._state=h.NORMAL;break;case h.OSC:if(r===i.C0.ESC||r===i.C0.BEL){switch(r===i.C0.ESC&&this._position++,this._terminal.params.push(this._terminal.currentParam),this._terminal.params[0]){case 0:case 1:case 2:this._terminal.params[1]&&(this._terminal.title=this._terminal.params[1],this._terminal.handleTitle(this._terminal.title))}this._terminal.params=[],this._terminal.currentParam=0,this._state=h.NORMAL}else this._terminal.params.length?this._terminal.currentParam+=r:r>="0"&&r<="9"?this._terminal.currentParam=10*this._terminal.currentParam+r.charCodeAt(0)-48:";"===r&&(this._terminal.params.push(this._terminal.currentParam),this._terminal.currentParam="");break;case h.CSI_PARAM:if(r in a){a[r](this);break}this.finalizeParam(),this._state=h.CSI;case h.CSI:r in l?l[r](this._inputHandler,this._terminal.params,this._terminal.prefix,this._terminal.postfix,this):this._terminal.error("Unknown CSI code: %s.",r),this._state=h.NORMAL,this._terminal.prefix="",this._terminal.postfix="";break;case h.DCS:if(r===i.C0.ESC||r===i.C0.BEL){r===i.C0.ESC&&this._position++;var p=void 0,f=void 0;switch(this._terminal.prefix){case"":break;case"$q":switch(p=this._terminal.currentParam,f=!1,p){case'"q':p='0"q';break;case'"p':p='61"p';break;case"r":p=this._terminal.scrollTop+1+";"+(this._terminal.scrollBottom+1)+"r";break;case"m":p="0m";break;default:this._terminal.error("Unknown DCS Pt: %s.",p),p=""}this._terminal.send(i.C0.ESC+"P"+ +f+"$r"+p+i.C0.ESC+"\\");break;case"+p":break;case"+q":p=this._terminal.currentParam,f=!1,this._terminal.send(i.C0.ESC+"P"+ +f+"+r"+p+i.C0.ESC+"\\");break;default:this._terminal.error("Unknown DCS prefix: %s.",this._terminal.prefix)}this._terminal.currentParam=0,this._terminal.prefix="",this._state=h.NORMAL}else this._terminal.currentParam?this._terminal.currentParam+=r:this._terminal.prefix||"$"===r||"+"===r?2===this._terminal.prefix.length?this._terminal.currentParam=r:this._terminal.prefix+=r:this._terminal.currentParam=r;break;case h.IGNORE:r!==i.C0.ESC&&r!==i.C0.BEL||(r===i.C0.ESC&&this._position++,this._state=h.NORMAL)}}return this._state},e.prototype.setState=function(e){this._state=e},e.prototype.setPrefix=function(e){this._terminal.prefix=e},e.prototype.setPostfix=function(e){this._terminal.postfix=e},e.prototype.setParam=function(e){this._terminal.currentParam=e},e.prototype.getParam=function(){return this._terminal.currentParam},e.prototype.finalizeParam=function(){this._terminal.params.push(this._terminal.currentParam),this._terminal.currentParam=0},e.prototype.skipNextChar=function(){this._position++},e}();t.Parser=c},function(e,t,r){"use strict";function i(e){var t=e.ownerDocument.createElement("span");t.innerHTML="hello world",e.appendChild(t);var r=t.offsetWidth,i=t.offsetHeight;t.style.fontWeight="bold";var o=t.offsetWidth,s=t.offsetHeight;return e.removeChild(t),r!==o||i!==s}Object.defineProperty(t,"__esModule",{value:!0});var o,s=r(26);!function(e){e[e.BOLD=1]="BOLD",e[e.UNDERLINE=2]="UNDERLINE",e[e.BLINK=4]="BLINK",e[e.INVERSE=8]="INVERSE",e[e.INVISIBLE=16]="INVISIBLE"}(o||(o={}));var n=null,a=function(){function e(e){this._terminal=e,this._refreshRowsQueue=[],this._refreshFramesSkipped=0,this._refreshAnimationFrame=null,this._spanElementObjectPool=new s.DomElementObjectPool("span"),null===n&&(n=i(this._terminal.element)),this._spanElementObjectPool=new s.DomElementObjectPool("span")}return e.prototype.queueRefresh=function(e,t){this._refreshRowsQueue.push({start:e,end:t}),this._refreshAnimationFrame||(this._refreshAnimationFrame=window.requestAnimationFrame(this._refreshLoop.bind(this)))},e.prototype._refreshLoop=function(){if(this._terminal.writeBuffer.length>0&&this._refreshFramesSkipped++<=5)this._refreshAnimationFrame=window.requestAnimationFrame(this._refreshLoop.bind(this));else{this._refreshFramesSkipped=0;var e,t;if(this._refreshRowsQueue.length>4)e=0,t=this._terminal.rows-1;else{e=this._refreshRowsQueue[0].start,t=this._refreshRowsQueue[0].end;for(var r=1;r<this._refreshRowsQueue.length;r++)this._refreshRowsQueue[r].start<e&&(e=this._refreshRowsQueue[r].start),this._refreshRowsQueue[r].end>t&&(t=this._refreshRowsQueue[r].end)}this._refreshRowsQueue=[],this._refreshAnimationFrame=null,this._refresh(e,t)}},e.prototype._refresh=function(e,t){var r;t-e>=this._terminal.rows/2&&(r=this._terminal.element.parentNode)&&this._terminal.element.removeChild(this._terminal.rowContainer);var i=this._terminal.cols,s=e;for(t>=this._terminal.rows&&(this._terminal.log("`end` is too large. Most likely a bad CSR."),t=this._terminal.rows-1);s<=t;s++){var a=s+this._terminal.ydisp,l=this._terminal.lines.get(a),h=void 0;h=this._terminal.y===s-(this._terminal.ybase-this._terminal.ydisp)&&this._terminal.cursorState&&!this._terminal.cursorHidden?this._terminal.x:-1;for(var c=this._terminal.defAttr,u=document.createDocumentFragment(),d="",p=void 0;this._terminal.children[s].children.length;){var f=this._terminal.children[s].children[0];this._terminal.children[s].removeChild(f),this._spanElementObjectPool.release(f)}for(var g=0;g<i;g++){var m=l[g][0],y=l[g][1],b=l[g][2];if(b){if(g===h&&(m=-1),m!==c&&(c!==this._terminal.defAttr&&(d&&(p.innerHTML=d,d=""),u.appendChild(p),p=null),m!==this._terminal.defAttr))if(d&&!p&&(p=this._spanElementObjectPool.acquire()),p&&(d&&(p.innerHTML=d,d=""),u.appendChild(p)),p=this._spanElementObjectPool.acquire(),-1===m)p.classList.add("reverse-video"),p.classList.add("terminal-cursor");else{var _=511&m,C=m>>9&511,w=m>>18;if(w&o.BOLD&&(n||p.classList.add("xterm-bold"),C<8&&(C+=8)),w&o.UNDERLINE&&p.classList.add("xterm-underline"),w&o.BLINK&&p.classList.add("xterm-blink"),w&o.INVERSE){var S=_;_=C,C=S,1&w&&C<8&&(C+=8)}w&o.INVISIBLE&&p.classList.add("xterm-hidden"),w&o.INVERSE&&(257===_&&(_=15),256===C&&(C=0)),_<256&&p.classList.add("xterm-bg-color-"+_),C<256&&p.classList.add("xterm-color-"+C)}if(2===b)d+='<span class="xterm-wide-char">'+y+"</span>";else if(y.charCodeAt(0)>255)d+='<span class="xterm-normal-char">'+y+"</span>";else switch(y){case"&":d+="&amp;";break;case"<":d+="&lt;";break;case">":d+="&gt;";break;default:d+=y<=" "?"&nbsp;":y}c=m}}d&&!p&&(p=this._spanElementObjectPool.acquire()),p&&(d&&(p.innerHTML=d,d=""),u.appendChild(p),p=null),this._terminal.children[s].appendChild(u)}r&&this._terminal.element.appendChild(this._terminal.rowContainer),this._terminal.emit("refresh",{element:this._terminal.element,start:e,end:t})},e.prototype.refreshSelection=function(e,t){for(;this._terminal.selectionContainer.children.length;)this._terminal.selectionContainer.removeChild(this._terminal.selectionContainer.children[0]);if(e&&t){var r=e[1]-this._terminal.ydisp,i=t[1]-this._terminal.ydisp,o=Math.max(r,0),s=Math.min(i,this._terminal.rows-1);if(!(o>=this._terminal.rows||s<0)){var n=document.createDocumentFragment(),a=r===o?e[0]:0,l=o===s?t[0]:this._terminal.cols;n.appendChild(this._createSelectionElement(o,a,l));var h=s-o-1;if(n.appendChild(this._createSelectionElement(o+1,0,this._terminal.cols,h)),o!==s){var c=i===s?t[0]:this._terminal.cols;n.appendChild(this._createSelectionElement(s,0,c))}this._terminal.selectionContainer.appendChild(n)}}},e.prototype._createSelectionElement=function(e,t,r,i){void 0===i&&(i=1);var o=document.createElement("div");return o.style.height=i*this._terminal.charMeasure.height+"px",o.style.top=e*this._terminal.charMeasure.height+"px",o.style.left=t*this._terminal.charMeasure.width+"px",o.style.width=this._terminal.charMeasure.width*(r-t)+"px",o},e}();t.Renderer=a},function(e,t,r){"use strict";var i=this&&this.__extends||function(){var e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var r in t)t.hasOwnProperty(r)&&(e[r]=t[r])};return function(t,r){function i(){this.constructor=t}e(t,r),t.prototype=null===r?Object.create(r):(i.prototype=r.prototype,new i)}}();Object.defineProperty(t,"__esModule",{value:!0});var o,s=r(10),n=r(9),a=r(1),l=r(21),h=String.fromCharCode(160),c=new RegExp(h,"g");!function(e){e[e.NORMAL=0]="NORMAL",e[e.WORD=1]="WORD",e[e.LINE=2]="LINE"}(o||(o={}));var u=function(e){function t(t,r,i,s){var n=e.call(this)||this;return n._terminal=t,n._buffer=r,n._rowContainer=i,n._charMeasure=s,n._initListeners(),n.enable(),n._model=new l.SelectionModel(t),n._lastMouseDownTime=0,n._activeSelectionMode=o.NORMAL,n}return i(t,e),t.prototype._initListeners=function(){var e=this;this._bufferTrimListener=function(t){return e._onTrim(t)},this._mouseMoveListener=function(t){return e._onMouseMove(t)},this._mouseDownListener=function(t){return e._onMouseDown(t)},this._mouseUpListener=function(t){return e._onMouseUp(t)}},t.prototype.disable=function(){this.clearSelection(),this._buffer.off("trim",this._bufferTrimListener),this._rowContainer.removeEventListener("mousedown",this._mouseDownListener)},t.prototype.enable=function(){this._buffer.on("trim",this._bufferTrimListener),this._rowContainer.addEventListener("mousedown",this._mouseDownListener)},t.prototype.setBuffer=function(e){this._buffer=e,this.clearSelection()},Object.defineProperty(t.prototype,"hasSelection",{get:function(){var e=this._model.finalSelectionStart,t=this._model.finalSelectionEnd;return!(!e||!t)&&(e[0]!==t[0]||e[1]!==t[1])},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"selectionText",{get:function(){var e=this._model.finalSelectionStart,t=this._model.finalSelectionEnd;if(!e||!t)return"";var r=e[1]===t[1]?t[0]:null,i=[];i.push(this._translateBufferLineToString(this._buffer.get(e[1]),!0,e[0],r));for(var o=e[1]+1;o<=t[1]-1;o++){var s=this._buffer.get(o),a=this._translateBufferLineToString(s,!0);s.isWrapped?i[i.length-1]+=a:i.push(a)}if(e[1]!==t[1]){var s=this._buffer.get(t[1]),a=this._translateBufferLineToString(s,!0,0,t[0]);s.isWrapped?i[i.length-1]+=a:i.push(a)}return i.map(function(e){return e.replace(c," ")}).join(n.isMSWindows?"\r\n":"\n")},enumerable:!0,configurable:!0}),t.prototype.clearSelection=function(){this._model.clearSelection(),this._removeMouseDownListeners(),this.refresh()},t.prototype._translateBufferLineToString=function(e,t,r,i){void 0===r&&(r=0),void 0===i&&(i=null);for(var o="",s=r,n=i,a=0;a<e.length;a++){var l=e[a];o+=l[1],0===l[2]&&(r>=a&&s--,i>=a&&n--)}var h=n||e.length;if(t){var c=o.search(/\s+$/);if(-1!==c&&(h=Math.min(h,c)),h<=s)return""}return o.substring(s,h)},t.prototype.refresh=function(e){var t=this;this._refreshAnimationFrame||(this._refreshAnimationFrame=window.requestAnimationFrame(function(){return t._refresh()})),n.isLinux&&e&&this.selectionText.length&&this.emit("newselection",this.selectionText)},t.prototype._refresh=function(){this._refreshAnimationFrame=null,this.emit("refresh",{start:this._model.finalSelectionStart,end:this._model.finalSelectionEnd})},t.prototype.selectAll=function(){this._model.isSelectAllActive=!0,this.refresh()},t.prototype._onTrim=function(e){this._model.onTrim(e)&&this.refresh()},t.prototype._getMouseBufferCoords=function(e){var t=s.getCoords(e,this._rowContainer,this._charMeasure,this._terminal.cols,this._terminal.rows,!0);return t[0]--,t[1]--,t[1]+=this._terminal.ydisp,t},t.prototype._getMouseEventScrollAmount=function(e){var t=s.getCoordsRelativeToElement(e,this._rowContainer)[1],r=this._terminal.rows*this._charMeasure.height;return t>=0&&t<=r?0:(t>r&&(t-=r),t=Math.min(Math.max(t,-50),50),(t/=50)/Math.abs(t)+Math.round(14*t))},t.prototype._onMouseDown=function(e){0===e.button&&(e.preventDefault(),this._dragScrollAmount=0,this._setMouseClickCount(e),e.shiftKey?this._onShiftClick(e):1===this._clickCount?this._onSingleClick(e):2===this._clickCount?this._onDoubleClick(e):3===this._clickCount&&this._onTripleClick(e),this._addMouseDownListeners(),this.refresh(!0))},t.prototype._addMouseDownListeners=function(){var e=this;this._rowContainer.ownerDocument.addEventListener("mousemove",this._mouseMoveListener),this._rowContainer.ownerDocument.addEventListener("mouseup",this._mouseUpListener),this._dragScrollIntervalTimer=setInterval(function(){return e._dragScroll()},50)},t.prototype._removeMouseDownListeners=function(){this._rowContainer.ownerDocument.removeEventListener("mousemove",this._mouseMoveListener),this._rowContainer.ownerDocument.removeEventListener("mouseup",this._mouseUpListener),clearInterval(this._dragScrollIntervalTimer),this._dragScrollIntervalTimer=null},t.prototype._onShiftClick=function(e){this._model.selectionStart&&(this._model.selectionEnd=this._getMouseBufferCoords(e))},t.prototype._onSingleClick=function(e){this._model.selectionStartLength=0,this._model.isSelectAllActive=!1,this._activeSelectionMode=o.NORMAL,this._model.selectionStart=this._getMouseBufferCoords(e),this._model.selectionStart&&(this._model.selectionEnd=null,0===this._buffer.get(this._model.selectionStart[1])[this._model.selectionStart[0]][2]&&this._model.selectionStart[0]++)},t.prototype._onDoubleClick=function(e){var t=this._getMouseBufferCoords(e);t&&(this._activeSelectionMode=o.WORD,this._selectWordAt(t))},t.prototype._onTripleClick=function(e){var t=this._getMouseBufferCoords(e);t&&(this._activeSelectionMode=o.LINE,this._selectLineAt(t[1]))},t.prototype._setMouseClickCount=function(e){var t=(new Date).getTime();(t-this._lastMouseDownTime>400||this._distanceFromLastMousePosition(e)>10)&&(this._clickCount=0),this._lastMouseDownTime=t,this._lastMousePosition=[e.pageX,e.pageY],this._clickCount++},t.prototype._distanceFromLastMousePosition=function(e){return Math.max(Math.abs(this._lastMousePosition[0]-e.pageX),Math.abs(this._lastMousePosition[1]-e.pageY))},t.prototype._onMouseMove=function(e){var t=this._model.selectionEnd?[this._model.selectionEnd[0],this._model.selectionEnd[1]]:null;if(this._model.selectionEnd=this._getMouseBufferCoords(e),this._activeSelectionMode===o.LINE?this._model.selectionEnd[1]<this._model.selectionStart[1]?this._model.selectionEnd[0]=0:this._model.selectionEnd[0]=this._terminal.cols:this._activeSelectionMode===o.WORD&&this._selectToWordAt(this._model.selectionEnd),this._dragScrollAmount=this._getMouseEventScrollAmount(e),this._dragScrollAmount>0?this._model.selectionEnd[0]=this._terminal.cols-1:this._dragScrollAmount<0&&(this._model.selectionEnd[0]=0),this._model.selectionEnd[1]<this._buffer.length){var r=this._buffer.get(this._model.selectionEnd[1])[this._model.selectionEnd[0]];r&&0===r[2]&&this._model.selectionEnd[0]++}t&&t[0]===this._model.selectionEnd[0]&&t[1]===this._model.selectionEnd[1]||this.refresh(!0)},t.prototype._dragScroll=function(){this._dragScrollAmount&&(this._terminal.scrollDisp(this._dragScrollAmount,!1),this._dragScrollAmount>0?this._model.selectionEnd=[this._terminal.cols-1,this._terminal.ydisp+this._terminal.rows]:this._model.selectionEnd=[0,this._terminal.ydisp],this.refresh())},t.prototype._onMouseUp=function(e){this._removeMouseDownListeners()},t.prototype._convertViewportColToCharacterIndex=function(e,t){for(var r=t[0],i=0;t[0]>=i;i++)0===e[i][2]&&r--;return r},t.prototype._getWordAt=function(e){var t=this._buffer.get(e[1]),r=this._translateBufferLineToString(t,!1),i=this._convertViewportColToCharacterIndex(t,e),o=i,s=e[0]-o,n=0,a=0;if(" "===r.charAt(o)){for(;o>0&&" "===r.charAt(o-1);)o--;for(;i<r.length&&" "===r.charAt(i+1);)i++}else{var l=e[0],h=e[0];for(0===t[l][2]&&(n++,l--),2===t[h][2]&&(a++,h++);o>0&&!this._isCharWordSeparator(r.charAt(o-1));)0===t[l-1][2]&&(n++,l--),o--,l--;for(;i+1<r.length&&!this._isCharWordSeparator(r.charAt(i+1));)2===t[h+1][2]&&(a++,h++),i++,h++}return{start:o+s-n,length:Math.min(i-o+n+a+1,this._terminal.cols)}},t.prototype._selectWordAt=function(e){var t=this._getWordAt(e);this._model.selectionStart=[t.start,e[1]],this._model.selectionStartLength=t.length},t.prototype._selectToWordAt=function(e){var t=this._getWordAt(e);this._model.selectionEnd=[this._model.areSelectionValuesReversed()?t.start:t.start+t.length,e[1]]},t.prototype._isCharWordSeparator=function(e){return" ()[]{}'\"".indexOf(e)>=0},t.prototype._selectLineAt=function(e){this._model.selectionStart=[0,e],this._model.selectionStartLength=this._terminal.cols},t}(a.EventEmitter);t.SelectionManager=u},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=function(){function e(e){this._terminal=e,this.clearSelection()}return e.prototype.clearSelection=function(){this.selectionStart=null,this.selectionEnd=null,this.isSelectAllActive=!1,this.selectionStartLength=0},Object.defineProperty(e.prototype,"finalSelectionStart",{get:function(){return this.isSelectAllActive?[0,0]:this.selectionEnd&&this.selectionStart&&this.areSelectionValuesReversed()?this.selectionEnd:this.selectionStart},enumerable:!0,configurable:!0}),Object.defineProperty(e.prototype,"finalSelectionEnd",{get:function(){return this.isSelectAllActive?[this._terminal.cols,this._terminal.ybase+this._terminal.rows-1]:this.selectionStart?!this.selectionEnd||this.areSelectionValuesReversed()?[this.selectionStart[0]+this.selectionStartLength,this.selectionStart[1]]:this.selectionStartLength&&this.selectionEnd[1]===this.selectionStart[1]?[Math.max(this.selectionStart[0]+this.selectionStartLength,this.selectionEnd[0]),this.selectionEnd[1]]:this.selectionEnd:null},enumerable:!0,configurable:!0}),e.prototype.areSelectionValuesReversed=function(){var e=this.selectionStart,t=this.selectionEnd;return e[1]>t[1]||e[1]===t[1]&&e[0]>t[0]},e.prototype.onTrim=function(e){return this.selectionStart&&(this.selectionStart[1]-=e),this.selectionEnd&&(this.selectionEnd[1]-=e),this.selectionEnd&&this.selectionEnd[1]<0?(this.clearSelection(),!0):(this.selectionStart&&this.selectionStart[1]<0&&(this.selectionStart[1]=0),!1)},e}();t.SelectionModel=i},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=function(){function e(e,t,r,i){var o=this;this.terminal=e,this.viewportElement=t,this.scrollArea=r,this.charMeasure=i,this.currentRowHeight=0,this.lastRecordedBufferLength=0,this.lastRecordedViewportHeight=0,this.terminal.on("scroll",this.syncScrollArea.bind(this)),this.terminal.on("resize",this.syncScrollArea.bind(this)),this.viewportElement.addEventListener("scroll",this.onScroll.bind(this)),setTimeout(function(){return o.syncScrollArea()},0)}return e.prototype.refresh=function(){if(this.charMeasure.height>0){var e=this.charMeasure.height!==this.currentRowHeight;e&&(this.currentRowHeight=this.charMeasure.height,this.viewportElement.style.lineHeight=this.charMeasure.height+"px",this.terminal.rowContainer.style.lineHeight=this.charMeasure.height+"px");var t=this.lastRecordedViewportHeight!==this.terminal.rows;(e||t)&&(this.lastRecordedViewportHeight=this.terminal.rows,this.viewportElement.style.height=this.charMeasure.height*this.terminal.rows+"px",this.terminal.selectionContainer.style.height=this.viewportElement.style.height),this.scrollArea.style.height=this.charMeasure.height*this.lastRecordedBufferLength+"px"}},e.prototype.syncScrollArea=function(){this.lastRecordedBufferLength!==this.terminal.lines.length?(this.lastRecordedBufferLength=this.terminal.lines.length,this.refresh()):this.lastRecordedViewportHeight!==this.terminal.rows?this.refresh():this.charMeasure.height!==this.currentRowHeight&&this.refresh();var e=this.terminal.ydisp*this.currentRowHeight;this.viewportElement.scrollTop!==e&&(this.viewportElement.scrollTop=e)},e.prototype.onScroll=function(e){var t=Math.round(this.viewportElement.scrollTop/this.currentRowHeight)-this.terminal.ydisp;this.terminal.scrollDisp(t,!0)},e.prototype.onWheel=function(e){if(0!==e.deltaY){var t=1;e.deltaMode===WheelEvent.DOM_DELTA_LINE?t=this.currentRowHeight:e.deltaMode===WheelEvent.DOM_DELTA_PAGE&&(t=this.currentRowHeight*this.terminal.rows),this.viewportElement.scrollTop+=e.deltaY*t,e.preventDefault()}},e.prototype.onTouchStart=function(e){this.lastTouchY=e.touches[0].pageY},e.prototype.onTouchMove=function(e){var t=this.lastTouchY-e.touches[0].pageY;this.lastTouchY=e.touches[0].pageY,0!==t&&(this.viewportElement.scrollTop+=t,e.preventDefault())},e}();t.Viewport=i},function(e,t,r){"use strict";function i(e,t){return t?e.replace(/\r?\n/g,"\r"):e}function o(e,t){t.style.position="fixed",t.style.width="20px",t.style.height="20px",t.style.left=e.clientX-10+"px",t.style.top=e.clientY-10+"px",t.style.zIndex="1000",t.focus(),setTimeout(function(){t.style.position=null,t.style.width=null,t.style.height=null,t.style.left=null,t.style.top=null,t.style.zIndex=null},4)}Object.defineProperty(t,"__esModule",{value:!0}),t.prepareTextForTerminal=i,t.copyHandler=function(e,t,r){t.browser.isMSIE?window.clipboardData.setData("Text",r.selectionText):e.clipboardData.setData("text/plain",r.selectionText),e.preventDefault()},t.pasteHandler=function(e,t){e.stopPropagation();var r=function(r){return r=i(r,t.browser.isMSWindows),t.handler(r),t.textarea.value="",t.emit("paste",r),t.cancel(e)};t.browser.isMSIE?window.clipboardData&&r(window.clipboardData.getData("Text")):e.clipboardData&&r(e.clipboardData.getData("text/plain"))},t.moveTextAreaUnderMouseCursor=o,t.rightClickHandler=function(e,t,r){o(e,t),t.value=r.selectionText,t.select()}},function(e,t,r){"use strict";var i=this&&this.__extends||function(){var e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var r in t)t.hasOwnProperty(r)&&(e[r]=t[r])};return function(t,r){function i(){this.constructor=t}e(t,r),t.prototype=null===r?Object.create(r):(i.prototype=r.prototype,new i)}}();Object.defineProperty(t,"__esModule",{value:!0});var o=function(e){function t(t,r){var i=e.call(this)||this;return i._document=t,i._parentElement=r,i}return i(t,e),Object.defineProperty(t.prototype,"width",{get:function(){return this._width},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"height",{get:function(){return this._height},enumerable:!0,configurable:!0}),t.prototype.measure=function(){var e=this;this._measureElement?this._doMeasure():(this._measureElement=this._document.createElement("span"),this._measureElement.style.position="absolute",this._measureElement.style.top="0",this._measureElement.style.left="-9999em",this._measureElement.textContent="W",this._measureElement.setAttribute("aria-hidden","true"),this._parentElement.appendChild(this._measureElement),setTimeout(function(){return e._doMeasure()},0))},t.prototype._doMeasure=function(){var e=this._measureElement.getBoundingClientRect();0!==e.width&&0!==e.height&&(this._width===e.width&&this._height===e.height||(this._width=e.width,this._height=e.height,this.emit("charsizechanged")))},t}(r(1).EventEmitter);t.CharMeasure=o},function(e,t,r){"use strict";var i=this&&this.__extends||function(){var e=Object.setPrototypeOf||{__proto__:[]}instanceof Array&&function(e,t){e.__proto__=t}||function(e,t){for(var r in t)t.hasOwnProperty(r)&&(e[r]=t[r])};return function(t,r){function i(){this.constructor=t}e(t,r),t.prototype=null===r?Object.create(r):(i.prototype=r.prototype,new i)}}();Object.defineProperty(t,"__esModule",{value:!0});var o=function(e){function t(t){var r=e.call(this)||this;return r._array=new Array(t),r._startIndex=0,r._length=0,r}return i(t,e),Object.defineProperty(t.prototype,"maxLength",{get:function(){return this._array.length},set:function(e){for(var t=new Array(e),r=0;r<Math.min(e,this.length);r++)t[r]=this._array[this._getCyclicIndex(r)];this._array=t,this._startIndex=0},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"length",{get:function(){return this._length},set:function(e){if(e>this._length)for(var t=this._length;t<e;t++)this._array[t]=void 0;this._length=e},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"forEach",{get:function(){var e=this;return function(t){for(var r=e.length,i=0;i<r;i++)t(e.get(i),i)}},enumerable:!0,configurable:!0}),t.prototype.get=function(e){return this._array[this._getCyclicIndex(e)]},t.prototype.set=function(e,t){this._array[this._getCyclicIndex(e)]=t},t.prototype.push=function(e){this._array[this._getCyclicIndex(this._length)]=e,this._length===this.maxLength?(++this._startIndex===this.maxLength&&(this._startIndex=0),this.emit("trim",1)):this._length++},t.prototype.pop=function(){return this._array[this._getCyclicIndex(this._length---1)]},t.prototype.splice=function(e,t){for(var r=[],i=2;i<arguments.length;i++)r[i-2]=arguments[i];if(t){for(o=e;o<this._length-t;o++)this._array[this._getCyclicIndex(o)]=this._array[this._getCyclicIndex(o+t)];this._length-=t}if(r&&r.length){for(o=this._length-1;o>=e;o--)this._array[this._getCyclicIndex(o+r.length)]=this._array[this._getCyclicIndex(o)];for(var o=0;o<r.length;o++)this._array[this._getCyclicIndex(e+o)]=r[o];if(this._length+r.length>this.maxLength){var s=this._length+r.length-this.maxLength;this._startIndex+=s,this._length=this.maxLength,this.emit("trim",s)}else this._length+=r.length}},t.prototype.trimStart=function(e){e>this._length&&(e=this._length),this._startIndex+=e,this._length-=e,this.emit("trim",e)},t.prototype.shiftElements=function(e,t,r){if(!(t<=0)){if(e<0||e>=this._length)throw new Error("start argument out of range");if(e+r<0)throw new Error("Cannot shift elements in list beyond index 0");if(r>0){for(o=t-1;o>=0;o--)this.set(e+o+r,this.get(e+o));var i=e+t+r-this._length;if(i>0)for(this._length+=i;this._length>this.maxLength;)this._length--,this._startIndex++,this.emit("trim",1)}else for(var o=0;o<t;o++)this.set(e+o+r,this.get(e+o))}},t.prototype._getCyclicIndex=function(e){return(this._startIndex+e)%this.maxLength},t}(r(1).EventEmitter);t.CircularList=o},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=function(){function e(e){this.type=e,this._type=e,this._pool=[],this._inUse={}}return e.prototype.acquire=function(){var t;return t=0===this._pool.length?this._createNew():this._pool.pop(),this._inUse[t.getAttribute(e.OBJECT_ID_ATTRIBUTE)]=t,t},e.prototype.release=function(t){if(!this._inUse[t.getAttribute(e.OBJECT_ID_ATTRIBUTE)])throw new Error("Could not release an element not yet acquired");delete this._inUse[t.getAttribute(e.OBJECT_ID_ATTRIBUTE)],this._cleanElement(t),this._pool.push(t)},e.prototype._createNew=function(){var t=document.createElement(this._type),r=e._objectCount++;return t.setAttribute(e.OBJECT_ID_ATTRIBUTE,r.toString(10)),t},e.prototype._cleanElement=function(e){e.className="",e.innerHTML=""},e}();i.OBJECT_ID_ATTRIBUTE="data-obj-id",i._objectCount=0,t.DomElementObjectPool=i},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0}),t.contains=function(e,t){return e.indexOf(t)>=0}},function(e,t,r){"use strict";Object.defineProperty(t,"__esModule",{value:!0});var i=r(11),o=r(14),s=r(13),n=r(12),a=document.getElementById("terminal");if(null!==a){var l;l="hterm"==gotty_term?new i.Hterm(a):new o.Xterm(a);var h=("https:"==window.location.protocol?"wss://":"ws://")+window.location.host+window.location.pathname+"ws",c=window.location.search,u=new n.ConnectionFactory(h,s.protocols),d=new s.WebTTY(l,u,c,gotty_auth_token).open();window.addEventListener("unload",function(){d(),l.close()})}},function(e,t,r){function i(e){return r(o(e))}function o(e){var t=s[e];if(!(t+1))throw new Error("Cannot find module '"+e+"'.");return t}var s={"./attach/attach":5,"./attach/attach.js":5,"./attach/package.json":30,"./fit/fit":6,"./fit/fit.js":6,"./fit/package.json":31,"./fullscreen/fullscreen":7,"./fullscreen/fullscreen.css":32,"./fullscreen/fullscreen.js":7,"./fullscreen/package.json":33,"./terminado/package.json":34,"./terminado/terminado":8,"./terminado/terminado.js":8};i.keys=function(){return Object.keys(s)},i.resolve=o,e.exports=i,i.id=29},function(e,t){e.exports={name:"xterm.attach",main:"attach.js",private:!0}},function(e,t){e.exports={name:"xterm.fit",main:"fit.js",private:!0}},function(e,t){throw new Error("Module parse failed: /home/yudai/archive/products/2015/gotty/src/github.com/bigstack-oss/gotty/js/node_modules/xterm/lib/addons/fullscreen/fullscreen.css Unexpected token (1:0)\nYou may need an appropriate loader to handle this file type.\n| .xterm.fullscreen {\n|     position: fixed;\n|     top: 0;")},function(e,t){e.exports={name:"xterm.fullscreen",main:"fullscreen.js",private:!0}},function(e,t){e.exports={name:"xterm.terminado",main:"terminado.js",private:!0}}]);
\ No newline at end of file
diff --git a/main.go b/main.go
index b6290be..ce8c1d8 100644
--- a/main.go
+++ b/main.go
@@ -9,12 +9,12 @@ import (
 	"strings"
 	"syscall"
 
-	"github.com/codegangsta/cli"
+	"github.com/urfave/cli"
 
-	"github.com/yudai/gotty/backend/localcommand"
-	"github.com/yudai/gotty/pkg/homedir"
-	"github.com/yudai/gotty/server"
-	"github.com/yudai/gotty/utils"
+	"github.com/bigstack-oss/gotty/backend/localcommand"
+	"github.com/bigstack-oss/gotty/pkg/homedir"
+	"github.com/bigstack-oss/gotty/server"
+	"github.com/bigstack-oss/gotty/utils"
 )
 
 func main() {
diff --git a/server/handlers.go b/server/handlers.go
index f1a2f9b..0bfdf85 100644
--- a/server/handlers.go
+++ b/server/handlers.go
@@ -13,7 +13,7 @@ import (
 	"github.com/gorilla/websocket"
 	"github.com/pkg/errors"
 
-	"github.com/yudai/gotty/webtty"
+	"github.com/bigstack-oss/gotty/webtty"
 )
 
 func (server *Server) generateHandleWS(ctx context.Context, cancel context.CancelFunc, counter *counter) http.HandlerFunc {
diff --git a/server/server.go b/server/server.go
index 6411e71..9184347 100644
--- a/server/server.go
+++ b/server/server.go
@@ -3,7 +3,6 @@ package server
 import (
 	"context"
 	"crypto/tls"
-	"crypto/x509"
 	"html/template"
 	"io/ioutil"
 	"log"
@@ -13,14 +12,14 @@ import (
 	noesctmpl "text/template"
 	"time"
 
-	"github.com/NYTimes/gziphandler"
 	"github.com/elazarl/go-bindata-assetfs"
+	"github.com/NYTimes/gziphandler"
 	"github.com/gorilla/websocket"
 	"github.com/pkg/errors"
 
-	"github.com/yudai/gotty/pkg/homedir"
-	"github.com/yudai/gotty/pkg/randomstring"
-	"github.com/yudai/gotty/webtty"
+	"github.com/bigstack-oss/gotty/pkg/homedir"
+	"github.com/bigstack-oss/gotty/pkg/randomstring"
+	"github.com/bigstack-oss/gotty/webtty"
 )
 
 // Server provides a webtty HTTP endpoint.
@@ -217,30 +216,27 @@ func (server *Server) setupHTTPServer(handler http.Handler) (*http.Server, error
 		Handler: handler,
 	}
 
-	if server.options.EnableTLSClientAuth {
-		tlsConfig, err := server.tlsConfig()
-		if err != nil {
-			return nil, errors.Wrapf(err, "failed to setup TLS configuration")
-		}
-		srv.TLSConfig = tlsConfig
+	tlsConfig, err := server.tlsConfig()
+	if err != nil {
+		return nil, errors.Wrapf(err, "failed to setup TLS configuration")
 	}
+	srv.TLSConfig = tlsConfig
 
 	return srv, nil
 }
 
 func (server *Server) tlsConfig() (*tls.Config, error) {
-	caFile := homedir.Expand(server.options.TLSCACrtFile)
-	caCert, err := ioutil.ReadFile(caFile)
-	if err != nil {
-		return nil, errors.New("could not open CA crt file " + caFile)
-	}
-	caCertPool := x509.NewCertPool()
-	if !caCertPool.AppendCertsFromPEM(caCert) {
-		return nil, errors.New("could not parse CA crt file data in " + caFile)
-	}
 	tlsConfig := &tls.Config{
-		ClientCAs:  caCertPool,
-		ClientAuth: tls.RequireAndVerifyClientCert,
+		MinVersion: tls.VersionTLS12,
+		CipherSuites: []uint16{
+			tls.TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256,
+			tls.TLS_ECDHE_ECDSA_WITH_AES_128_GCM_SHA256,
+			tls.TLS_RSA_WITH_AES_256_CBC_SHA,
+			tls.TLS_RSA_WITH_AES_128_CBC_SHA,
+			tls.TLS_RSA_WITH_AES_128_GCM_SHA256,
+			tls.TLS_RSA_WITH_AES_256_GCM_SHA384,
+		},
 	}
+
 	return tlsConfig, nil
 }
diff --git a/server/slave.go b/server/slave.go
index 77d0973..55f868f 100644
--- a/server/slave.go
+++ b/server/slave.go
@@ -1,7 +1,7 @@
 package server
 
 import (
-	"github.com/yudai/gotty/webtty"
+	"github.com/bigstack-oss/gotty/webtty"
 )
 
 // Slave is webtty.Slave with some additional methods.
diff --git a/utils/flags.go b/utils/flags.go
index b5c66b9..3783893 100644
--- a/utils/flags.go
+++ b/utils/flags.go
@@ -7,11 +7,11 @@ import (
 	"reflect"
 	"strings"
 
-	"github.com/codegangsta/cli"
 	"github.com/fatih/structs"
+	"github.com/urfave/cli"
 	"github.com/yudai/hcl"
 
-	"github.com/yudai/gotty/pkg/homedir"
+	"github.com/bigstack-oss/gotty/pkg/homedir"
 )
 
 func GenerateFlags(options ...interface{}) (flags []cli.Flag, mappings map[string]string, err error) {
diff --git a/vendor/github.com/codegangsta/cli/.gitignore b/vendor/github.com/codegangsta/cli/.gitignore
deleted file mode 100644
index faf70c4..0000000
--- a/vendor/github.com/codegangsta/cli/.gitignore
+++ /dev/null
@@ -1,2 +0,0 @@
-*.coverprofile
-node_modules/
diff --git a/vendor/github.com/codegangsta/cli/.travis.yml b/vendor/github.com/codegangsta/cli/.travis.yml
deleted file mode 100644
index 94836d7..0000000
--- a/vendor/github.com/codegangsta/cli/.travis.yml
+++ /dev/null
@@ -1,39 +0,0 @@
-language: go
-
-sudo: false
-
-cache:
-  directories:
-  - node_modules
-
-go:
-- 1.2.x
-- 1.3.x
-- 1.4.2
-- 1.5.x
-- 1.6.x
-- 1.7.x
-- master
-
-matrix:
-  allow_failures:
-  - go: master
-  include:
-  - go: 1.6.x
-    os: osx
-  - go: 1.7.x
-    os: osx
-
-before_script:
-- go get github.com/urfave/gfmrun/... || true
-- go get golang.org/x/tools/... || true
-- if [ ! -f node_modules/.bin/markdown-toc ] ; then
-    npm install markdown-toc ;
-  fi
-
-script:
-- ./runtests gen
-- ./runtests vet
-- ./runtests test
-- ./runtests gfmrun
-- ./runtests toc
diff --git a/vendor/github.com/codegangsta/cli/CHANGELOG.md b/vendor/github.com/codegangsta/cli/CHANGELOG.md
deleted file mode 100644
index 07f7546..0000000
--- a/vendor/github.com/codegangsta/cli/CHANGELOG.md
+++ /dev/null
@@ -1,392 +0,0 @@
-# Change Log
-
-**ATTN**: This project uses [semantic versioning](http://semver.org/).
-
-## [Unreleased]
-
-## [1.19.1] - 2016-11-21
-
-### Fixed
-
-- Fixes regression introduced in 1.19.0 where using an `ActionFunc` as
-  the `Action` for a command would cause it to error rather than calling the
-  function. Should not have a affected declarative cases using `func(c
-  *cli.Context) err)`.
-- Shell completion now handles the case where the user specifies
-  `--generate-bash-completion` immediately after a flag that takes an argument.
-  Previously it call the application with `--generate-bash-completion` as the
-  flag value.
-
-## [1.19.0] - 2016-11-19
-### Added
-- `FlagsByName` was added to make it easy to sort flags (e.g. `sort.Sort(cli.FlagsByName(app.Flags))`)
-- A `Description` field was added to `App` for a more detailed description of
-  the application (similar to the existing `Description` field on `Command`)
-- Flag type code generation via `go generate`
-- Write to stderr and exit 1 if action returns non-nil error
-- Added support for TOML to the `altsrc` loader
-- `SkipArgReorder` was added to allow users to skip the argument reordering.
-  This is useful if you want to consider all "flags" after an argument as
-  arguments rather than flags (the default behavior of the stdlib `flag`
-  library). This is backported functionality from the [removal of the flag
-  reordering](https://github.com/urfave/cli/pull/398) in the unreleased version
-  2
-- For formatted errors (those implementing `ErrorFormatter`), the errors will
-  be formatted during output. Compatible with `pkg/errors`.
-
-### Changed
-- Raise minimum tested/supported Go version to 1.2+
-
-### Fixed
-- Consider empty environment variables as set (previously environment variables
-  with the equivalent of `""` would be skipped rather than their value used).
-- Return an error if the value in a given environment variable cannot be parsed
-  as the flag type. Previously these errors were silently swallowed.
-- Print full error when an invalid flag is specified (which includes the invalid flag)
-- `App.Writer` defaults to `stdout` when `nil`
-- If no action is specified on a command or app, the help is now printed instead of `panic`ing
-- `App.Metadata` is initialized automatically now (previously was `nil` unless initialized)
-- Correctly show help message if `-h` is provided to a subcommand
-- `context.(Global)IsSet` now respects environment variables. Previously it
-  would return `false` if a flag was specified in the environment rather than
-  as an argument
-- Removed deprecation warnings to STDERR to avoid them leaking to the end-user
-- `altsrc`s import paths were updated to use `gopkg.in/urfave/cli.v1`. This
-  fixes issues that occurred when `gopkg.in/urfave/cli.v1` was imported as well
-  as `altsrc` where Go would complain that the types didn't match
-
-## [1.18.1] - 2016-08-28
-### Fixed
-- Removed deprecation warnings to STDERR to avoid them leaking to the end-user (backported)
-
-## [1.18.0] - 2016-06-27
-### Added
-- `./runtests` test runner with coverage tracking by default
-- testing on OS X
-- testing on Windows
-- `UintFlag`, `Uint64Flag`, and `Int64Flag` types and supporting code
-
-### Changed
-- Use spaces for alignment in help/usage output instead of tabs, making the
-  output alignment consistent regardless of tab width
-
-### Fixed
-- Printing of command aliases in help text
-- Printing of visible flags for both struct and struct pointer flags
-- Display the `help` subcommand when using `CommandCategories`
-- No longer swallows `panic`s that occur within the `Action`s themselves when
-  detecting the signature of the `Action` field
-
-## [1.17.1] - 2016-08-28
-### Fixed
-- Removed deprecation warnings to STDERR to avoid them leaking to the end-user
-
-## [1.17.0] - 2016-05-09
-### Added
-- Pluggable flag-level help text rendering via `cli.DefaultFlagStringFunc`
-- `context.GlobalBoolT` was added as an analogue to `context.GlobalBool`
-- Support for hiding commands by setting `Hidden: true` -- this will hide the
-  commands in help output
-
-### Changed
-- `Float64Flag`, `IntFlag`, and `DurationFlag` default values are no longer
-  quoted in help text output.
-- All flag types now include `(default: {value})` strings following usage when a
-  default value can be (reasonably) detected.
-- `IntSliceFlag` and `StringSliceFlag` usage strings are now more consistent
-  with non-slice flag types
-- Apps now exit with a code of 3 if an unknown subcommand is specified
-  (previously they printed "No help topic for...", but still exited 0. This
-  makes it easier to script around apps built using `cli` since they can trust
-  that a 0 exit code indicated a successful execution.
-- cleanups based on [Go Report Card
-  feedback](https://goreportcard.com/report/github.com/urfave/cli)
-
-## [1.16.1] - 2016-08-28
-### Fixed
-- Removed deprecation warnings to STDERR to avoid them leaking to the end-user
-
-## [1.16.0] - 2016-05-02
-### Added
-- `Hidden` field on all flag struct types to omit from generated help text
-
-### Changed
-- `BashCompletionFlag` (`--enable-bash-completion`) is now omitted from
-generated help text via the `Hidden` field
-
-### Fixed
-- handling of error values in `HandleAction` and `HandleExitCoder`
-
-## [1.15.0] - 2016-04-30
-### Added
-- This file!
-- Support for placeholders in flag usage strings
-- `App.Metadata` map for arbitrary data/state management
-- `Set` and `GlobalSet` methods on `*cli.Context` for altering values after
-parsing.
-- Support for nested lookup of dot-delimited keys in structures loaded from
-YAML.
-
-### Changed
-- The `App.Action` and `Command.Action` now prefer a return signature of
-`func(*cli.Context) error`, as defined by `cli.ActionFunc`.  If a non-nil
-`error` is returned, there may be two outcomes:
-    - If the error fulfills `cli.ExitCoder`, then `os.Exit` will be called
-    automatically
-    - Else the error is bubbled up and returned from `App.Run`
-- Specifying an `Action` with the legacy return signature of
-`func(*cli.Context)` will produce a deprecation message to stderr
-- Specifying an `Action` that is not a `func` type will produce a non-zero exit
-from `App.Run`
-- Specifying an `Action` func that has an invalid (input) signature will
-produce a non-zero exit from `App.Run`
-
-### Deprecated
-- <a name="deprecated-cli-app-runandexitonerror"></a>
-`cli.App.RunAndExitOnError`, which should now be done by returning an error
-that fulfills `cli.ExitCoder` to `cli.App.Run`.
-- <a name="deprecated-cli-app-action-signature"></a> the legacy signature for
-`cli.App.Action` of `func(*cli.Context)`, which should now have a return
-signature of `func(*cli.Context) error`, as defined by `cli.ActionFunc`.
-
-### Fixed
-- Added missing `*cli.Context.GlobalFloat64` method
-
-## [1.14.0] - 2016-04-03 (backfilled 2016-04-25)
-### Added
-- Codebeat badge
-- Support for categorization via `CategorizedHelp` and `Categories` on app.
-
-### Changed
-- Use `filepath.Base` instead of `path.Base` in `Name` and `HelpName`.
-
-### Fixed
-- Ensure version is not shown in help text when `HideVersion` set.
-
-## [1.13.0] - 2016-03-06 (backfilled 2016-04-25)
-### Added
-- YAML file input support.
-- `NArg` method on context.
-
-## [1.12.0] - 2016-02-17 (backfilled 2016-04-25)
-### Added
-- Custom usage error handling.
-- Custom text support in `USAGE` section of help output.
-- Improved help messages for empty strings.
-- AppVeyor CI configuration.
-
-### Changed
-- Removed `panic` from default help printer func.
-- De-duping and optimizations.
-
-### Fixed
-- Correctly handle `Before`/`After` at command level when no subcommands.
-- Case of literal `-` argument causing flag reordering.
-- Environment variable hints on Windows.
-- Docs updates.
-
-## [1.11.1] - 2015-12-21 (backfilled 2016-04-25)
-### Changed
-- Use `path.Base` in `Name` and `HelpName`
-- Export `GetName` on flag types.
-
-### Fixed
-- Flag parsing when skipping is enabled.
-- Test output cleanup.
-- Move completion check to account for empty input case.
-
-## [1.11.0] - 2015-11-15 (backfilled 2016-04-25)
-### Added
-- Destination scan support for flags.
-- Testing against `tip` in Travis CI config.
-
-### Changed
-- Go version in Travis CI config.
-
-### Fixed
-- Removed redundant tests.
-- Use correct example naming in tests.
-
-## [1.10.2] - 2015-10-29 (backfilled 2016-04-25)
-### Fixed
-- Remove unused var in bash completion.
-
-## [1.10.1] - 2015-10-21 (backfilled 2016-04-25)
-### Added
-- Coverage and reference logos in README.
-
-### Fixed
-- Use specified values in help and version parsing.
-- Only display app version and help message once.
-
-## [1.10.0] - 2015-10-06 (backfilled 2016-04-25)
-### Added
-- More tests for existing functionality.
-- `ArgsUsage` at app and command level for help text flexibility.
-
-### Fixed
-- Honor `HideHelp` and `HideVersion` in `App.Run`.
-- Remove juvenile word from README.
-
-## [1.9.0] - 2015-09-08 (backfilled 2016-04-25)
-### Added
-- `FullName` on command with accompanying help output update.
-- Set default `$PROG` in bash completion.
-
-### Changed
-- Docs formatting.
-
-### Fixed
-- Removed self-referential imports in tests.
-
-## [1.8.0] - 2015-06-30 (backfilled 2016-04-25)
-### Added
-- Support for `Copyright` at app level.
-- `Parent` func at context level to walk up context lineage.
-
-### Fixed
-- Global flag processing at top level.
-
-## [1.7.1] - 2015-06-11 (backfilled 2016-04-25)
-### Added
-- Aggregate errors from `Before`/`After` funcs.
-- Doc comments on flag structs.
-- Include non-global flags when checking version and help.
-- Travis CI config updates.
-
-### Fixed
-- Ensure slice type flags have non-nil values.
-- Collect global flags from the full command hierarchy.
-- Docs prose.
-
-## [1.7.0] - 2015-05-03 (backfilled 2016-04-25)
-### Changed
-- `HelpPrinter` signature includes output writer.
-
-### Fixed
-- Specify go 1.1+ in docs.
-- Set `Writer` when running command as app.
-
-## [1.6.0] - 2015-03-23 (backfilled 2016-04-25)
-### Added
-- Multiple author support.
-- `NumFlags` at context level.
-- `Aliases` at command level.
-
-### Deprecated
-- `ShortName` at command level.
-
-### Fixed
-- Subcommand help output.
-- Backward compatible support for deprecated `Author` and `Email` fields.
-- Docs regarding `Names`/`Aliases`.
-
-## [1.5.0] - 2015-02-20 (backfilled 2016-04-25)
-### Added
-- `After` hook func support at app and command level.
-
-### Fixed
-- Use parsed context when running command as subcommand.
-- Docs prose.
-
-## [1.4.1] - 2015-01-09 (backfilled 2016-04-25)
-### Added
-- Support for hiding `-h / --help` flags, but not `help` subcommand.
-- Stop flag parsing after `--`.
-
-### Fixed
-- Help text for generic flags to specify single value.
-- Use double quotes in output for defaults.
-- Use `ParseInt` instead of `ParseUint` for int environment var values.
-- Use `0` as base when parsing int environment var values.
-
-## [1.4.0] - 2014-12-12 (backfilled 2016-04-25)
-### Added
-- Support for environment variable lookup "cascade".
-- Support for `Stdout` on app for output redirection.
-
-### Fixed
-- Print command help instead of app help in `ShowCommandHelp`.
-
-## [1.3.1] - 2014-11-13 (backfilled 2016-04-25)
-### Added
-- Docs and example code updates.
-
-### Changed
-- Default `-v / --version` flag made optional.
-
-## [1.3.0] - 2014-08-10 (backfilled 2016-04-25)
-### Added
-- `FlagNames` at context level.
-- Exposed `VersionPrinter` var for more control over version output.
-- Zsh completion hook.
-- `AUTHOR` section in default app help template.
-- Contribution guidelines.
-- `DurationFlag` type.
-
-## [1.2.0] - 2014-08-02
-### Added
-- Support for environment variable defaults on flags plus tests.
-
-## [1.1.0] - 2014-07-15
-### Added
-- Bash completion.
-- Optional hiding of built-in help command.
-- Optional skipping of flag parsing at command level.
-- `Author`, `Email`, and `Compiled` metadata on app.
-- `Before` hook func support at app and command level.
-- `CommandNotFound` func support at app level.
-- Command reference available on context.
-- `GenericFlag` type.
-- `Float64Flag` type.
-- `BoolTFlag` type.
-- `IsSet` flag helper on context.
-- More flag lookup funcs at context level.
-- More tests &amp; docs.
-
-### Changed
-- Help template updates to account for presence/absence of flags.
-- Separated subcommand help template.
-- Exposed `HelpPrinter` var for more control over help output.
-
-## [1.0.0] - 2013-11-01
-### Added
-- `help` flag in default app flag set and each command flag set.
-- Custom handling of argument parsing errors.
-- Command lookup by name at app level.
-- `StringSliceFlag` type and supporting `StringSlice` type.
-- `IntSliceFlag` type and supporting `IntSlice` type.
-- Slice type flag lookups by name at context level.
-- Export of app and command help functions.
-- More tests &amp; docs.
-
-## 0.1.0 - 2013-07-22
-### Added
-- Initial implementation.
-
-[Unreleased]: https://github.com/urfave/cli/compare/v1.18.0...HEAD
-[1.18.0]: https://github.com/urfave/cli/compare/v1.17.0...v1.18.0
-[1.17.0]: https://github.com/urfave/cli/compare/v1.16.0...v1.17.0
-[1.16.0]: https://github.com/urfave/cli/compare/v1.15.0...v1.16.0
-[1.15.0]: https://github.com/urfave/cli/compare/v1.14.0...v1.15.0
-[1.14.0]: https://github.com/urfave/cli/compare/v1.13.0...v1.14.0
-[1.13.0]: https://github.com/urfave/cli/compare/v1.12.0...v1.13.0
-[1.12.0]: https://github.com/urfave/cli/compare/v1.11.1...v1.12.0
-[1.11.1]: https://github.com/urfave/cli/compare/v1.11.0...v1.11.1
-[1.11.0]: https://github.com/urfave/cli/compare/v1.10.2...v1.11.0
-[1.10.2]: https://github.com/urfave/cli/compare/v1.10.1...v1.10.2
-[1.10.1]: https://github.com/urfave/cli/compare/v1.10.0...v1.10.1
-[1.10.0]: https://github.com/urfave/cli/compare/v1.9.0...v1.10.0
-[1.9.0]: https://github.com/urfave/cli/compare/v1.8.0...v1.9.0
-[1.8.0]: https://github.com/urfave/cli/compare/v1.7.1...v1.8.0
-[1.7.1]: https://github.com/urfave/cli/compare/v1.7.0...v1.7.1
-[1.7.0]: https://github.com/urfave/cli/compare/v1.6.0...v1.7.0
-[1.6.0]: https://github.com/urfave/cli/compare/v1.5.0...v1.6.0
-[1.5.0]: https://github.com/urfave/cli/compare/v1.4.1...v1.5.0
-[1.4.1]: https://github.com/urfave/cli/compare/v1.4.0...v1.4.1
-[1.4.0]: https://github.com/urfave/cli/compare/v1.3.1...v1.4.0
-[1.3.1]: https://github.com/urfave/cli/compare/v1.3.0...v1.3.1
-[1.3.0]: https://github.com/urfave/cli/compare/v1.2.0...v1.3.0
-[1.2.0]: https://github.com/urfave/cli/compare/v1.1.0...v1.2.0
-[1.1.0]: https://github.com/urfave/cli/compare/v1.0.0...v1.1.0
-[1.0.0]: https://github.com/urfave/cli/compare/v0.1.0...v1.0.0
diff --git a/vendor/github.com/codegangsta/cli/README.md b/vendor/github.com/codegangsta/cli/README.md
deleted file mode 100644
index bb5f61e..0000000
--- a/vendor/github.com/codegangsta/cli/README.md
+++ /dev/null
@@ -1,1364 +0,0 @@
-cli
-===
-
-[![Build Status](https://travis-ci.org/urfave/cli.svg?branch=master)](https://travis-ci.org/urfave/cli)
-[![Windows Build Status](https://ci.appveyor.com/api/projects/status/rtgk5xufi932pb2v?svg=true)](https://ci.appveyor.com/project/urfave/cli)
-[![GoDoc](https://godoc.org/github.com/urfave/cli?status.svg)](https://godoc.org/github.com/urfave/cli)
-[![codebeat](https://codebeat.co/badges/0a8f30aa-f975-404b-b878-5fab3ae1cc5f)](https://codebeat.co/projects/github-com-urfave-cli)
-[![Go Report Card](https://goreportcard.com/badge/urfave/cli)](https://goreportcard.com/report/urfave/cli)
-[![top level coverage](https://gocover.io/_badge/github.com/urfave/cli?0 "top level coverage")](http://gocover.io/github.com/urfave/cli) /
-[![altsrc coverage](https://gocover.io/_badge/github.com/urfave/cli/altsrc?0 "altsrc coverage")](http://gocover.io/github.com/urfave/cli/altsrc)
-
-**Notice:** This is the library formerly known as
-`github.com/codegangsta/cli` -- Github will automatically redirect requests
-to this repository, but we recommend updating your references for clarity.
-
-cli is a simple, fast, and fun package for building command line apps in Go. The
-goal is to enable developers to write fast and distributable command line
-applications in an expressive way.
-
-<!-- toc -->
-
-- [Overview](#overview)
-- [Installation](#installation)
-  * [Supported platforms](#supported-platforms)
-  * [Using the `v2` branch](#using-the-v2-branch)
-  * [Pinning to the `v1` releases](#pinning-to-the-v1-releases)
-- [Getting Started](#getting-started)
-- [Examples](#examples)
-  * [Arguments](#arguments)
-  * [Flags](#flags)
-    + [Placeholder Values](#placeholder-values)
-    + [Alternate Names](#alternate-names)
-    + [Ordering](#ordering)
-    + [Values from the Environment](#values-from-the-environment)
-    + [Values from alternate input sources (YAML, TOML, and others)](#values-from-alternate-input-sources-yaml-toml-and-others)
-  * [Subcommands](#subcommands)
-  * [Subcommands categories](#subcommands-categories)
-  * [Exit code](#exit-code)
-  * [Bash Completion](#bash-completion)
-    + [Enabling](#enabling)
-    + [Distribution](#distribution)
-    + [Customization](#customization)
-  * [Generated Help Text](#generated-help-text)
-    + [Customization](#customization-1)
-  * [Version Flag](#version-flag)
-    + [Customization](#customization-2)
-    + [Full API Example](#full-api-example)
-- [Contribution Guidelines](#contribution-guidelines)
-
-<!-- tocstop -->
-
-## Overview
-
-Command line apps are usually so tiny that there is absolutely no reason why
-your code should *not* be self-documenting. Things like generating help text and
-parsing command flags/options should not hinder productivity when writing a
-command line app.
-
-**This is where cli comes into play.** cli makes command line programming fun,
-organized, and expressive!
-
-## Installation
-
-Make sure you have a working Go environment.  Go version 1.2+ is supported.  [See
-the install instructions for Go](http://golang.org/doc/install.html).
-
-To install cli, simply run:
-```
-$ go get github.com/urfave/cli
-```
-
-Make sure your `PATH` includes the `$GOPATH/bin` directory so your commands can
-be easily used:
-```
-export PATH=$PATH:$GOPATH/bin
-```
-
-### Supported platforms
-
-cli is tested against multiple versions of Go on Linux, and against the latest
-released version of Go on OS X and Windows.  For full details, see
-[`./.travis.yml`](./.travis.yml) and [`./appveyor.yml`](./appveyor.yml).
-
-### Using the `v2` branch
-
-**Warning**: The `v2` branch is currently unreleased and considered unstable.
-
-There is currently a long-lived branch named `v2` that is intended to land as
-the new `master` branch once development there has settled down.  The current
-`master` branch (mirrored as `v1`) is being manually merged into `v2` on
-an irregular human-based schedule, but generally if one wants to "upgrade" to
-`v2` *now* and accept the volatility (read: "awesomeness") that comes along with
-that, please use whatever version pinning of your preference, such as via
-`gopkg.in`:
-
-```
-$ go get gopkg.in/urfave/cli.v2
-```
-
-``` go
-...
-import (
-  "gopkg.in/urfave/cli.v2" // imports as package "cli"
-)
-...
-```
-
-### Pinning to the `v1` releases
-
-Similarly to the section above describing use of the `v2` branch, if one wants
-to avoid any unexpected compatibility pains once `v2` becomes `master`, then
-pinning to `v1` is an acceptable option, e.g.:
-
-```
-$ go get gopkg.in/urfave/cli.v1
-```
-
-``` go
-...
-import (
-  "gopkg.in/urfave/cli.v1" // imports as package "cli"
-)
-...
-```
-
-This will pull the latest tagged `v1` release (e.g. `v1.18.1` at the time of writing).
-
-## Getting Started
-
-One of the philosophies behind cli is that an API should be playful and full of
-discovery. So a cli app can be as little as one line of code in `main()`.
-
-<!-- {
-  "args": ["&#45;&#45;help"],
-  "output": "A new cli application"
-} -->
-``` go
-package main
-
-import (
-  "os"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  cli.NewApp().Run(os.Args)
-}
-```
-
-This app will run and show help text, but is not very useful. Let's give an
-action to execute and some help documentation:
-
-<!-- {
-  "output": "boom! I say!"
-} -->
-``` go
-package main
-
-import (
-  "fmt"
-  "os"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  app := cli.NewApp()
-  app.Name = "boom"
-  app.Usage = "make an explosive entrance"
-  app.Action = func(c *cli.Context) error {
-    fmt.Println("boom! I say!")
-    return nil
-  }
-
-  app.Run(os.Args)
-}
-```
-
-Running this already gives you a ton of functionality, plus support for things
-like subcommands and flags, which are covered below.
-
-## Examples
-
-Being a programmer can be a lonely job. Thankfully by the power of automation
-that is not the case! Let's create a greeter app to fend off our demons of
-loneliness!
-
-Start by creating a directory named `greet`, and within it, add a file,
-`greet.go` with the following code in it:
-
-<!-- {
-  "output": "Hello friend!"
-} -->
-``` go
-package main
-
-import (
-  "fmt"
-  "os"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  app := cli.NewApp()
-  app.Name = "greet"
-  app.Usage = "fight the loneliness!"
-  app.Action = func(c *cli.Context) error {
-    fmt.Println("Hello friend!")
-    return nil
-  }
-
-  app.Run(os.Args)
-}
-```
-
-Install our command to the `$GOPATH/bin` directory:
-
-```
-$ go install
-```
-
-Finally run our new command:
-
-```
-$ greet
-Hello friend!
-```
-
-cli also generates neat help text:
-
-```
-$ greet help
-NAME:
-    greet - fight the loneliness!
-
-USAGE:
-    greet [global options] command [command options] [arguments...]
-
-VERSION:
-    0.0.0
-
-COMMANDS:
-    help, h  Shows a list of commands or help for one command
-
-GLOBAL OPTIONS
-    --version Shows version information
-```
-
-### Arguments
-
-You can lookup arguments by calling the `Args` function on `cli.Context`, e.g.:
-
-<!-- {
-  "output": "Hello \""
-} -->
-``` go
-package main
-
-import (
-  "fmt"
-  "os"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  app := cli.NewApp()
-
-  app.Action = func(c *cli.Context) error {
-    fmt.Printf("Hello %q", c.Args().Get(0))
-    return nil
-  }
-
-  app.Run(os.Args)
-}
-```
-
-### Flags
-
-Setting and querying flags is simple.
-
-<!-- {
-  "output": "Hello Nefertiti"
-} -->
-``` go
-package main
-
-import (
-  "fmt"
-  "os"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  app := cli.NewApp()
-
-  app.Flags = []cli.Flag {
-    cli.StringFlag{
-      Name: "lang",
-      Value: "english",
-      Usage: "language for the greeting",
-    },
-  }
-
-  app.Action = func(c *cli.Context) error {
-    name := "Nefertiti"
-    if c.NArg() > 0 {
-      name = c.Args().Get(0)
-    }
-    if c.String("lang") == "spanish" {
-      fmt.Println("Hola", name)
-    } else {
-      fmt.Println("Hello", name)
-    }
-    return nil
-  }
-
-  app.Run(os.Args)
-}
-```
-
-You can also set a destination variable for a flag, to which the content will be
-scanned.
-
-<!-- {
-  "output": "Hello someone"
-} -->
-``` go
-package main
-
-import (
-  "os"
-  "fmt"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  var language string
-
-  app := cli.NewApp()
-
-  app.Flags = []cli.Flag {
-    cli.StringFlag{
-      Name:        "lang",
-      Value:       "english",
-      Usage:       "language for the greeting",
-      Destination: &language,
-    },
-  }
-
-  app.Action = func(c *cli.Context) error {
-    name := "someone"
-    if c.NArg() > 0 {
-      name = c.Args()[0]
-    }
-    if language == "spanish" {
-      fmt.Println("Hola", name)
-    } else {
-      fmt.Println("Hello", name)
-    }
-    return nil
-  }
-
-  app.Run(os.Args)
-}
-```
-
-See full list of flags at http://godoc.org/github.com/urfave/cli
-
-#### Placeholder Values
-
-Sometimes it's useful to specify a flag's value within the usage string itself.
-Such placeholders are indicated with back quotes.
-
-For example this:
-
-<!-- {
-  "args": ["&#45;&#45;help"],
-  "output": "&#45;&#45;config FILE, &#45;c FILE"
-} -->
-```go
-package main
-
-import (
-  "os"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  app := cli.NewApp()
-
-  app.Flags = []cli.Flag{
-    cli.StringFlag{
-      Name:  "config, c",
-      Usage: "Load configuration from `FILE`",
-    },
-  }
-
-  app.Run(os.Args)
-}
-```
-
-Will result in help output like:
-
-```
---config FILE, -c FILE   Load configuration from FILE
-```
-
-Note that only the first placeholder is used. Subsequent back-quoted words will
-be left as-is.
-
-#### Alternate Names
-
-You can set alternate (or short) names for flags by providing a comma-delimited
-list for the `Name`. e.g.
-
-<!-- {
-  "args": ["&#45;&#45;help"],
-  "output": "&#45;&#45;lang value, &#45;l value.*language for the greeting.*default: \"english\""
-} -->
-``` go
-package main
-
-import (
-  "os"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  app := cli.NewApp()
-
-  app.Flags = []cli.Flag {
-    cli.StringFlag{
-      Name: "lang, l",
-      Value: "english",
-      Usage: "language for the greeting",
-    },
-  }
-
-  app.Run(os.Args)
-}
-```
-
-That flag can then be set with `--lang spanish` or `-l spanish`. Note that
-giving two different forms of the same flag in the same command invocation is an
-error.
-
-#### Ordering
-
-Flags for the application and commands are shown in the order they are defined.
-However, it's possible to sort them from outside this library by using `FlagsByName`
-with `sort`.
-
-For example this:
-
-<!-- {
-  "args": ["&#45;&#45;help"],
-  "output": "Load configuration from FILE\n.*Language for the greeting.*"
-} -->
-``` go
-package main
-
-import (
-  "os"
-  "sort"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  app := cli.NewApp()
-
-  app.Flags = []cli.Flag {
-    cli.StringFlag{
-      Name: "lang, l",
-      Value: "english",
-      Usage: "Language for the greeting",
-    },
-    cli.StringFlag{
-      Name: "config, c",
-      Usage: "Load configuration from `FILE`",
-    },
-  }
-
-  sort.Sort(cli.FlagsByName(app.Flags))
-
-  app.Run(os.Args)
-}
-```
-
-Will result in help output like:
-
-```
---config FILE, -c FILE  Load configuration from FILE
---lang value, -l value  Language for the greeting (default: "english")
-```
-
-#### Values from the Environment
-
-You can also have the default value set from the environment via `EnvVar`.  e.g.
-
-<!-- {
-  "args": ["&#45;&#45;help"],
-  "output": "language for the greeting.*APP_LANG"
-} -->
-``` go
-package main
-
-import (
-  "os"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  app := cli.NewApp()
-
-  app.Flags = []cli.Flag {
-    cli.StringFlag{
-      Name: "lang, l",
-      Value: "english",
-      Usage: "language for the greeting",
-      EnvVar: "APP_LANG",
-    },
-  }
-
-  app.Run(os.Args)
-}
-```
-
-The `EnvVar` may also be given as a comma-delimited "cascade", where the first
-environment variable that resolves is used as the default.
-
-<!-- {
-  "args": ["&#45;&#45;help"],
-  "output": "language for the greeting.*LEGACY_COMPAT_LANG.*APP_LANG.*LANG"
-} -->
-``` go
-package main
-
-import (
-  "os"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  app := cli.NewApp()
-
-  app.Flags = []cli.Flag {
-    cli.StringFlag{
-      Name: "lang, l",
-      Value: "english",
-      Usage: "language for the greeting",
-      EnvVar: "LEGACY_COMPAT_LANG,APP_LANG,LANG",
-    },
-  }
-
-  app.Run(os.Args)
-}
-```
-
-#### Values from alternate input sources (YAML, TOML, and others)
-
-There is a separate package altsrc that adds support for getting flag values
-from other file input sources.
-
-Currently supported input source formats:
-* YAML
-* TOML
-
-In order to get values for a flag from an alternate input source the following
-code would be added to wrap an existing cli.Flag like below:
-
-``` go
-  altsrc.NewIntFlag(cli.IntFlag{Name: "test"})
-```
-
-Initialization must also occur for these flags. Below is an example initializing
-getting data from a yaml file below.
-
-``` go
-  command.Before = altsrc.InitInputSourceWithContext(command.Flags, NewYamlSourceFromFlagFunc("load"))
-```
-
-The code above will use the "load" string as a flag name to get the file name of
-a yaml file from the cli.Context.  It will then use that file name to initialize
-the yaml input source for any flags that are defined on that command.  As a note
-the "load" flag used would also have to be defined on the command flags in order
-for this code snipped to work.
-
-Currently only the aboved specified formats are supported but developers can
-add support for other input sources by implementing the
-altsrc.InputSourceContext for their given sources.
-
-Here is a more complete sample of a command using YAML support:
-
-<!-- {
-  "args": ["test-cmd", "&#45;&#45;help"],
-  "output": "&#45&#45;test value.*default: 0"
-} -->
-``` go
-package notmain
-
-import (
-  "fmt"
-  "os"
-
-  "github.com/urfave/cli"
-  "github.com/urfave/cli/altsrc"
-)
-
-func main() {
-  app := cli.NewApp()
-
-  flags := []cli.Flag{
-    altsrc.NewIntFlag(cli.IntFlag{Name: "test"}),
-    cli.StringFlag{Name: "load"},
-  }
-
-  app.Action = func(c *cli.Context) error {
-    fmt.Println("yaml ist rad")
-    return nil
-  }
-
-  app.Before = altsrc.InitInputSourceWithContext(flags, altsrc.NewYamlSourceFromFlagFunc("load"))
-  app.Flags = flags
-
-  app.Run(os.Args)
-}
-```
-
-### Subcommands
-
-Subcommands can be defined for a more git-like command line app.
-
-<!-- {
-  "args": ["template", "add"],
-  "output": "new task template: .+"
-} -->
-```go
-package main
-
-import (
-  "fmt"
-  "os"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  app := cli.NewApp()
-
-  app.Commands = []cli.Command{
-    {
-      Name:    "add",
-      Aliases: []string{"a"},
-      Usage:   "add a task to the list",
-      Action:  func(c *cli.Context) error {
-        fmt.Println("added task: ", c.Args().First())
-        return nil
-      },
-    },
-    {
-      Name:    "complete",
-      Aliases: []string{"c"},
-      Usage:   "complete a task on the list",
-      Action:  func(c *cli.Context) error {
-        fmt.Println("completed task: ", c.Args().First())
-        return nil
-      },
-    },
-    {
-      Name:        "template",
-      Aliases:     []string{"t"},
-      Usage:       "options for task templates",
-      Subcommands: []cli.Command{
-        {
-          Name:  "add",
-          Usage: "add a new template",
-          Action: func(c *cli.Context) error {
-            fmt.Println("new task template: ", c.Args().First())
-            return nil
-          },
-        },
-        {
-          Name:  "remove",
-          Usage: "remove an existing template",
-          Action: func(c *cli.Context) error {
-            fmt.Println("removed task template: ", c.Args().First())
-            return nil
-          },
-        },
-      },
-    },
-  }
-
-  app.Run(os.Args)
-}
-```
-
-### Subcommands categories
-
-For additional organization in apps that have many subcommands, you can
-associate a category for each command to group them together in the help
-output.
-
-E.g.
-
-```go
-package main
-
-import (
-  "os"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  app := cli.NewApp()
-
-  app.Commands = []cli.Command{
-    {
-      Name: "noop",
-    },
-    {
-      Name:     "add",
-      Category: "template",
-    },
-    {
-      Name:     "remove",
-      Category: "template",
-    },
-  }
-
-  app.Run(os.Args)
-}
-```
-
-Will include:
-
-```
-COMMANDS:
-    noop
-
-  Template actions:
-    add
-    remove
-```
-
-### Exit code
-
-Calling `App.Run` will not automatically call `os.Exit`, which means that by
-default the exit code will "fall through" to being `0`.  An explicit exit code
-may be set by returning a non-nil error that fulfills `cli.ExitCoder`, *or* a
-`cli.MultiError` that includes an error that fulfills `cli.ExitCoder`, e.g.:
-
-``` go
-package main
-
-import (
-  "os"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  app := cli.NewApp()
-  app.Flags = []cli.Flag{
-    cli.BoolTFlag{
-      Name:  "ginger-crouton",
-      Usage: "is it in the soup?",
-    },
-  }
-  app.Action = func(ctx *cli.Context) error {
-    if !ctx.Bool("ginger-crouton") {
-      return cli.NewExitError("it is not in the soup", 86)
-    }
-    return nil
-  }
-
-  app.Run(os.Args)
-}
-```
-
-### Bash Completion
-
-You can enable completion commands by setting the `EnableBashCompletion`
-flag on the `App` object.  By default, this setting will only auto-complete to
-show an app's subcommands, but you can write your own completion methods for
-the App or its subcommands.
-
-<!-- {
-  "args": ["complete", "&#45;&#45;generate&#45;bash&#45;completion"],
-  "output": "laundry"
-} -->
-``` go
-package main
-
-import (
-  "fmt"
-  "os"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  tasks := []string{"cook", "clean", "laundry", "eat", "sleep", "code"}
-
-  app := cli.NewApp()
-  app.EnableBashCompletion = true
-  app.Commands = []cli.Command{
-    {
-      Name:  "complete",
-      Aliases: []string{"c"},
-      Usage: "complete a task on the list",
-      Action: func(c *cli.Context) error {
-         fmt.Println("completed task: ", c.Args().First())
-         return nil
-      },
-      BashComplete: func(c *cli.Context) {
-        // This will complete if no args are passed
-        if c.NArg() > 0 {
-          return
-        }
-        for _, t := range tasks {
-          fmt.Println(t)
-        }
-      },
-    },
-  }
-
-  app.Run(os.Args)
-}
-```
-
-#### Enabling
-
-Source the `autocomplete/bash_autocomplete` file in your `.bashrc` file while
-setting the `PROG` variable to the name of your program:
-
-`PROG=myprogram source /.../cli/autocomplete/bash_autocomplete`
-
-#### Distribution
-
-Copy `autocomplete/bash_autocomplete` into `/etc/bash_completion.d/` and rename
-it to the name of the program you wish to add autocomplete support for (or
-automatically install it there if you are distributing a package). Don't forget
-to source the file to make it active in the current shell.
-
-```
-sudo cp src/bash_autocomplete /etc/bash_completion.d/<myprogram>
-source /etc/bash_completion.d/<myprogram>
-```
-
-Alternatively, you can just document that users should source the generic
-`autocomplete/bash_autocomplete` in their bash configuration with `$PROG` set
-to the name of their program (as above).
-
-#### Customization
-
-The default bash completion flag (`--generate-bash-completion`) is defined as
-`cli.BashCompletionFlag`, and may be redefined if desired, e.g.:
-
-<!-- {
-  "args": ["&#45;&#45;compgen"],
-  "output": "wat\nhelp\nh"
-} -->
-``` go
-package main
-
-import (
-  "os"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  cli.BashCompletionFlag = cli.BoolFlag{
-    Name:   "compgen",
-    Hidden: true,
-  }
-
-  app := cli.NewApp()
-  app.EnableBashCompletion = true
-  app.Commands = []cli.Command{
-    {
-      Name: "wat",
-    },
-  }
-  app.Run(os.Args)
-}
-```
-
-### Generated Help Text
-
-The default help flag (`-h/--help`) is defined as `cli.HelpFlag` and is checked
-by the cli internals in order to print generated help text for the app, command,
-or subcommand, and break execution.
-
-#### Customization
-
-All of the help text generation may be customized, and at multiple levels.  The
-templates are exposed as variables `AppHelpTemplate`, `CommandHelpTemplate`, and
-`SubcommandHelpTemplate` which may be reassigned or augmented, and full override
-is possible by assigning a compatible func to the `cli.HelpPrinter` variable,
-e.g.:
-
-<!-- {
-  "output": "Ha HA.  I pwnd the help!!1"
-} -->
-``` go
-package main
-
-import (
-  "fmt"
-  "io"
-  "os"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  // EXAMPLE: Append to an existing template
-  cli.AppHelpTemplate = fmt.Sprintf(`%s
-
-WEBSITE: http://awesometown.example.com
-
-SUPPORT: support@awesometown.example.com
-
-`, cli.AppHelpTemplate)
-
-  // EXAMPLE: Override a template
-  cli.AppHelpTemplate = `NAME:
-   {{.Name}} - {{.Usage}}
-USAGE:
-   {{.HelpName}} {{if .VisibleFlags}}[global options]{{end}}{{if .Commands}} command
-[command options]{{end}} {{if
-.ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}
-   {{if len .Authors}}
-AUTHOR(S):
-   {{range .Authors}}{{ . }}{{end}}
-   {{end}}{{if .Commands}}
-COMMANDS:
-{{range .Commands}}{{if not .HideHelp}}   {{join .Names ", "}}{{ "\t"
-}}{{.Usage}}{{ "\n" }}{{end}}{{end}}{{end}}{{if .VisibleFlags}}
-GLOBAL OPTIONS:
-   {{range .VisibleFlags}}{{.}}
-   {{end}}{{end}}{{if .Copyright }}
-COPYRIGHT:
-   {{.Copyright}}
-   {{end}}{{if .Version}}
-VERSION:
-   {{.Version}}
-   {{end}}
-`
-
-  // EXAMPLE: Replace the `HelpPrinter` func
-  cli.HelpPrinter = func(w io.Writer, templ string, data interface{}) {
-    fmt.Println("Ha HA.  I pwnd the help!!1")
-  }
-
-  cli.NewApp().Run(os.Args)
-}
-```
-
-The default flag may be customized to something other than `-h/--help` by
-setting `cli.HelpFlag`, e.g.:
-
-<!-- {
-  "args": ["&#45;&#45halp"],
-  "output": "haaaaalp.*HALP"
-} -->
-``` go
-package main
-
-import (
-  "os"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  cli.HelpFlag = cli.BoolFlag{
-    Name: "halp, haaaaalp",
-    Usage: "HALP",
-    EnvVar: "SHOW_HALP,HALPPLZ",
-  }
-
-  cli.NewApp().Run(os.Args)
-}
-```
-
-### Version Flag
-
-The default version flag (`-v/--version`) is defined as `cli.VersionFlag`, which
-is checked by the cli internals in order to print the `App.Version` via
-`cli.VersionPrinter` and break execution.
-
-#### Customization
-
-The default flag may be customized to something other than `-v/--version` by
-setting `cli.VersionFlag`, e.g.:
-
-<!-- {
-  "args": ["&#45;&#45print-version"],
-  "output": "partay version 19\\.99\\.0"
-} -->
-``` go
-package main
-
-import (
-  "os"
-
-  "github.com/urfave/cli"
-)
-
-func main() {
-  cli.VersionFlag = cli.BoolFlag{
-    Name: "print-version, V",
-    Usage: "print only the version",
-  }
-
-  app := cli.NewApp()
-  app.Name = "partay"
-  app.Version = "19.99.0"
-  app.Run(os.Args)
-}
-```
-
-Alternatively, the version printer at `cli.VersionPrinter` may be overridden, e.g.:
-
-<!-- {
-  "args": ["&#45;&#45version"],
-  "output": "version=19\\.99\\.0 revision=fafafaf"
-} -->
-``` go
-package main
-
-import (
-  "fmt"
-  "os"
-
-  "github.com/urfave/cli"
-)
-
-var (
-  Revision = "fafafaf"
-)
-
-func main() {
-  cli.VersionPrinter = func(c *cli.Context) {
-    fmt.Printf("version=%s revision=%s\n", c.App.Version, Revision)
-  }
-
-  app := cli.NewApp()
-  app.Name = "partay"
-  app.Version = "19.99.0"
-  app.Run(os.Args)
-}
-```
-
-#### Full API Example
-
-**Notice**: This is a contrived (functioning) example meant strictly for API
-demonstration purposes.  Use of one's imagination is encouraged.
-
-<!-- {
-  "output": "made it!\nPhew!"
-} -->
-``` go
-package main
-
-import (
-  "errors"
-  "flag"
-  "fmt"
-  "io"
-  "io/ioutil"
-  "os"
-  "time"
-
-  "github.com/urfave/cli"
-)
-
-func init() {
-  cli.AppHelpTemplate += "\nCUSTOMIZED: you bet ur muffins\n"
-  cli.CommandHelpTemplate += "\nYMMV\n"
-  cli.SubcommandHelpTemplate += "\nor something\n"
-
-  cli.HelpFlag = cli.BoolFlag{Name: "halp"}
-  cli.BashCompletionFlag = cli.BoolFlag{Name: "compgen", Hidden: true}
-  cli.VersionFlag = cli.BoolFlag{Name: "print-version, V"}
-
-  cli.HelpPrinter = func(w io.Writer, templ string, data interface{}) {
-    fmt.Fprintf(w, "best of luck to you\n")
-  }
-  cli.VersionPrinter = func(c *cli.Context) {
-    fmt.Fprintf(c.App.Writer, "version=%s\n", c.App.Version)
-  }
-  cli.OsExiter = func(c int) {
-    fmt.Fprintf(cli.ErrWriter, "refusing to exit %d\n", c)
-  }
-  cli.ErrWriter = ioutil.Discard
-  cli.FlagStringer = func(fl cli.Flag) string {
-    return fmt.Sprintf("\t\t%s", fl.GetName())
-  }
-}
-
-type hexWriter struct{}
-
-func (w *hexWriter) Write(p []byte) (int, error) {
-  for _, b := range p {
-    fmt.Printf("%x", b)
-  }
-  fmt.Printf("\n")
-
-  return len(p), nil
-}
-
-type genericType struct{
-  s string
-}
-
-func (g *genericType) Set(value string) error {
-  g.s = value
-  return nil
-}
-
-func (g *genericType) String() string {
-  return g.s
-}
-
-func main() {
-  app := cli.NewApp()
-  app.Name = "kənˈtrīv"
-  app.Version = "19.99.0"
-  app.Compiled = time.Now()
-  app.Authors = []cli.Author{
-    cli.Author{
-      Name:  "Example Human",
-      Email: "human@example.com",
-    },
-  }
-  app.Copyright = "(c) 1999 Serious Enterprise"
-  app.HelpName = "contrive"
-  app.Usage = "demonstrate available API"
-  app.UsageText = "contrive - demonstrating the available API"
-  app.ArgsUsage = "[args and such]"
-  app.Commands = []cli.Command{
-    cli.Command{
-      Name:        "doo",
-      Aliases:     []string{"do"},
-      Category:    "motion",
-      Usage:       "do the doo",
-      UsageText:   "doo - does the dooing",
-      Description: "no really, there is a lot of dooing to be done",
-      ArgsUsage:   "[arrgh]",
-      Flags: []cli.Flag{
-        cli.BoolFlag{Name: "forever, forevvarr"},
-      },
-      Subcommands: cli.Commands{
-        cli.Command{
-          Name:   "wop",
-          Action: wopAction,
-        },
-      },
-      SkipFlagParsing: false,
-      HideHelp:        false,
-      Hidden:          false,
-      HelpName:        "doo!",
-      BashComplete: func(c *cli.Context) {
-        fmt.Fprintf(c.App.Writer, "--better\n")
-      },
-      Before: func(c *cli.Context) error {
-        fmt.Fprintf(c.App.Writer, "brace for impact\n")
-        return nil
-      },
-      After: func(c *cli.Context) error {
-        fmt.Fprintf(c.App.Writer, "did we lose anyone?\n")
-        return nil
-      },
-      Action: func(c *cli.Context) error {
-        c.Command.FullName()
-        c.Command.HasName("wop")
-        c.Command.Names()
-        c.Command.VisibleFlags()
-        fmt.Fprintf(c.App.Writer, "dodododododoodododddooooododododooo\n")
-        if c.Bool("forever") {
-          c.Command.Run(c)
-        }
-        return nil
-      },
-      OnUsageError: func(c *cli.Context, err error, isSubcommand bool) error {
-        fmt.Fprintf(c.App.Writer, "for shame\n")
-        return err
-      },
-    },
-  }
-  app.Flags = []cli.Flag{
-    cli.BoolFlag{Name: "fancy"},
-    cli.BoolTFlag{Name: "fancier"},
-    cli.DurationFlag{Name: "howlong, H", Value: time.Second * 3},
-    cli.Float64Flag{Name: "howmuch"},
-    cli.GenericFlag{Name: "wat", Value: &genericType{}},
-    cli.Int64Flag{Name: "longdistance"},
-    cli.Int64SliceFlag{Name: "intervals"},
-    cli.IntFlag{Name: "distance"},
-    cli.IntSliceFlag{Name: "times"},
-    cli.StringFlag{Name: "dance-move, d"},
-    cli.StringSliceFlag{Name: "names, N"},
-    cli.UintFlag{Name: "age"},
-    cli.Uint64Flag{Name: "bigage"},
-  }
-  app.EnableBashCompletion = true
-  app.HideHelp = false
-  app.HideVersion = false
-  app.BashComplete = func(c *cli.Context) {
-    fmt.Fprintf(c.App.Writer, "lipstick\nkiss\nme\nlipstick\nringo\n")
-  }
-  app.Before = func(c *cli.Context) error {
-    fmt.Fprintf(c.App.Writer, "HEEEERE GOES\n")
-    return nil
-  }
-  app.After = func(c *cli.Context) error {
-    fmt.Fprintf(c.App.Writer, "Phew!\n")
-    return nil
-  }
-  app.CommandNotFound = func(c *cli.Context, command string) {
-    fmt.Fprintf(c.App.Writer, "Thar be no %q here.\n", command)
-  }
-  app.OnUsageError = func(c *cli.Context, err error, isSubcommand bool) error {
-    if isSubcommand {
-      return err
-    }
-
-    fmt.Fprintf(c.App.Writer, "WRONG: %#v\n", err)
-    return nil
-  }
-  app.Action = func(c *cli.Context) error {
-    cli.DefaultAppComplete(c)
-    cli.HandleExitCoder(errors.New("not an exit coder, though"))
-    cli.ShowAppHelp(c)
-    cli.ShowCommandCompletions(c, "nope")
-    cli.ShowCommandHelp(c, "also-nope")
-    cli.ShowCompletions(c)
-    cli.ShowSubcommandHelp(c)
-    cli.ShowVersion(c)
-
-    categories := c.App.Categories()
-    categories.AddCommand("sounds", cli.Command{
-      Name: "bloop",
-    })
-
-    for _, category := range c.App.Categories() {
-      fmt.Fprintf(c.App.Writer, "%s\n", category.Name)
-      fmt.Fprintf(c.App.Writer, "%#v\n", category.Commands)
-      fmt.Fprintf(c.App.Writer, "%#v\n", category.VisibleCommands())
-    }
-
-    fmt.Printf("%#v\n", c.App.Command("doo"))
-    if c.Bool("infinite") {
-      c.App.Run([]string{"app", "doo", "wop"})
-    }
-
-    if c.Bool("forevar") {
-      c.App.RunAsSubcommand(c)
-    }
-    c.App.Setup()
-    fmt.Printf("%#v\n", c.App.VisibleCategories())
-    fmt.Printf("%#v\n", c.App.VisibleCommands())
-    fmt.Printf("%#v\n", c.App.VisibleFlags())
-
-    fmt.Printf("%#v\n", c.Args().First())
-    if len(c.Args()) > 0 {
-      fmt.Printf("%#v\n", c.Args()[1])
-    }
-    fmt.Printf("%#v\n", c.Args().Present())
-    fmt.Printf("%#v\n", c.Args().Tail())
-
-    set := flag.NewFlagSet("contrive", 0)
-    nc := cli.NewContext(c.App, set, c)
-
-    fmt.Printf("%#v\n", nc.Args())
-    fmt.Printf("%#v\n", nc.Bool("nope"))
-    fmt.Printf("%#v\n", nc.BoolT("nerp"))
-    fmt.Printf("%#v\n", nc.Duration("howlong"))
-    fmt.Printf("%#v\n", nc.Float64("hay"))
-    fmt.Printf("%#v\n", nc.Generic("bloop"))
-    fmt.Printf("%#v\n", nc.Int64("bonk"))
-    fmt.Printf("%#v\n", nc.Int64Slice("burnks"))
-    fmt.Printf("%#v\n", nc.Int("bips"))
-    fmt.Printf("%#v\n", nc.IntSlice("blups"))
-    fmt.Printf("%#v\n", nc.String("snurt"))
-    fmt.Printf("%#v\n", nc.StringSlice("snurkles"))
-    fmt.Printf("%#v\n", nc.Uint("flub"))
-    fmt.Printf("%#v\n", nc.Uint64("florb"))
-    fmt.Printf("%#v\n", nc.GlobalBool("global-nope"))
-    fmt.Printf("%#v\n", nc.GlobalBoolT("global-nerp"))
-    fmt.Printf("%#v\n", nc.GlobalDuration("global-howlong"))
-    fmt.Printf("%#v\n", nc.GlobalFloat64("global-hay"))
-    fmt.Printf("%#v\n", nc.GlobalGeneric("global-bloop"))
-    fmt.Printf("%#v\n", nc.GlobalInt("global-bips"))
-    fmt.Printf("%#v\n", nc.GlobalIntSlice("global-blups"))
-    fmt.Printf("%#v\n", nc.GlobalString("global-snurt"))
-    fmt.Printf("%#v\n", nc.GlobalStringSlice("global-snurkles"))
-
-    fmt.Printf("%#v\n", nc.FlagNames())
-    fmt.Printf("%#v\n", nc.GlobalFlagNames())
-    fmt.Printf("%#v\n", nc.GlobalIsSet("wat"))
-    fmt.Printf("%#v\n", nc.GlobalSet("wat", "nope"))
-    fmt.Printf("%#v\n", nc.NArg())
-    fmt.Printf("%#v\n", nc.NumFlags())
-    fmt.Printf("%#v\n", nc.Parent())
-
-    nc.Set("wat", "also-nope")
-
-    ec := cli.NewExitError("ohwell", 86)
-    fmt.Fprintf(c.App.Writer, "%d", ec.ExitCode())
-    fmt.Printf("made it!\n")
-    return ec
-  }
-
-  if os.Getenv("HEXY") != "" {
-    app.Writer = &hexWriter{}
-    app.ErrWriter = &hexWriter{}
-  }
-
-  app.Metadata = map[string]interface{}{
-    "layers":     "many",
-    "explicable": false,
-    "whatever-values": 19.99,
-  }
-
-  app.Run(os.Args)
-}
-
-func wopAction(c *cli.Context) error {
-  fmt.Fprintf(c.App.Writer, ":wave: over here, eh\n")
-  return nil
-}
-```
-
-## Contribution Guidelines
-
-Feel free to put up a pull request to fix a bug or maybe add a feature. I will
-give it a code review and make sure that it does not break backwards
-compatibility. If I or any other collaborators agree that it is in line with
-the vision of the project, we will work with you to get the code into
-a mergeable state and merge it into the master branch.
-
-If you have contributed something significant to the project, we will most
-likely add you as a collaborator. As a collaborator you are given the ability
-to merge others pull requests. It is very important that new code does not
-break existing code, so be careful about what code you do choose to merge.
-
-If you feel like you have contributed to the project but have not yet been
-added as a collaborator, we probably forgot to add you, please open an issue.
diff --git a/vendor/github.com/codegangsta/cli/appveyor.yml b/vendor/github.com/codegangsta/cli/appveyor.yml
deleted file mode 100644
index 698b188..0000000
--- a/vendor/github.com/codegangsta/cli/appveyor.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-version: "{build}"
-
-os: Windows Server 2012 R2
-
-clone_folder: c:\gopath\src\github.com\urfave\cli
-
-environment:
-  GOPATH: C:\gopath
-  GOVERSION: 1.6
-  PYTHON: C:\Python27-x64
-  PYTHON_VERSION: 2.7.x
-  PYTHON_ARCH: 64
-
-install:
-- set PATH=%GOPATH%\bin;C:\go\bin;%PATH%
-- go version
-- go env
-- go get github.com/urfave/gfmrun/...
-- go get -v -t ./...
-
-build_script:
-- python runtests vet
-- python runtests test
-- python runtests gfmrun
diff --git a/vendor/github.com/codegangsta/cli/flag-types.json b/vendor/github.com/codegangsta/cli/flag-types.json
deleted file mode 100644
index 1223107..0000000
--- a/vendor/github.com/codegangsta/cli/flag-types.json
+++ /dev/null
@@ -1,93 +0,0 @@
-[
-  {
-    "name": "Bool",
-    "type": "bool",
-    "value": false,
-    "context_default": "false",
-    "parser": "strconv.ParseBool(f.Value.String())"
-  },
-  {
-    "name": "BoolT",
-    "type": "bool",
-    "value": false,
-    "doctail": " that is true by default",
-    "context_default": "false",
-    "parser": "strconv.ParseBool(f.Value.String())"
-  },
-  {
-    "name": "Duration",
-    "type": "time.Duration",
-    "doctail": " (see https://golang.org/pkg/time/#ParseDuration)",
-    "context_default": "0",
-    "parser": "time.ParseDuration(f.Value.String())"
-  },
-  {
-    "name": "Float64",
-    "type": "float64",
-    "context_default": "0",
-    "parser": "strconv.ParseFloat(f.Value.String(), 64)"
-  },
-  {
-    "name": "Generic",
-    "type": "Generic",
-    "dest": false,
-    "context_default": "nil",
-    "context_type": "interface{}"
-  },
-  {
-    "name": "Int64",
-    "type": "int64",
-    "context_default": "0",
-    "parser": "strconv.ParseInt(f.Value.String(), 0, 64)"
-  },
-  {
-    "name": "Int",
-    "type": "int",
-    "context_default": "0",
-    "parser": "strconv.ParseInt(f.Value.String(), 0, 64)",
-    "parser_cast": "int(parsed)"
-  },
-  {
-    "name": "IntSlice",
-    "type": "*IntSlice",
-    "dest": false,
-    "context_default": "nil",
-    "context_type": "[]int",
-    "parser": "(f.Value.(*IntSlice)).Value(), error(nil)"
-  },
-  {
-    "name": "Int64Slice",
-    "type": "*Int64Slice",
-    "dest": false,
-    "context_default": "nil",
-    "context_type": "[]int64",
-    "parser": "(f.Value.(*Int64Slice)).Value(), error(nil)"
-  },
-  {
-    "name": "String",
-    "type": "string",
-    "context_default": "\"\"",
-    "parser": "f.Value.String(), error(nil)"
-  },
-  {
-    "name": "StringSlice",
-    "type": "*StringSlice",
-    "dest": false,
-    "context_default": "nil",
-    "context_type": "[]string",
-    "parser": "(f.Value.(*StringSlice)).Value(), error(nil)"
-  },
-  {
-    "name": "Uint64",
-    "type": "uint64",
-    "context_default": "0",
-    "parser": "strconv.ParseUint(f.Value.String(), 0, 64)"
-  },
-  {
-    "name": "Uint",
-    "type": "uint",
-    "context_default": "0",
-    "parser": "strconv.ParseUint(f.Value.String(), 0, 64)",
-    "parser_cast": "uint(parsed)"
-  }
-]
diff --git a/vendor/github.com/codegangsta/cli/flag.go b/vendor/github.com/codegangsta/cli/flag.go
deleted file mode 100644
index 7dd8a2c..0000000
--- a/vendor/github.com/codegangsta/cli/flag.go
+++ /dev/null
@@ -1,799 +0,0 @@
-package cli
-
-import (
-	"flag"
-	"fmt"
-	"reflect"
-	"runtime"
-	"strconv"
-	"strings"
-	"syscall"
-	"time"
-)
-
-const defaultPlaceholder = "value"
-
-// BashCompletionFlag enables bash-completion for all commands and subcommands
-var BashCompletionFlag = BoolFlag{
-	Name:   "generate-bash-completion",
-	Hidden: true,
-}
-
-// VersionFlag prints the version for the application
-var VersionFlag = BoolFlag{
-	Name:  "version, v",
-	Usage: "print the version",
-}
-
-// HelpFlag prints the help for all commands and subcommands
-// Set to the zero value (BoolFlag{}) to disable flag -- keeps subcommand
-// unless HideHelp is set to true)
-var HelpFlag = BoolFlag{
-	Name:  "help, h",
-	Usage: "show help",
-}
-
-// FlagStringer converts a flag definition to a string. This is used by help
-// to display a flag.
-var FlagStringer FlagStringFunc = stringifyFlag
-
-// FlagsByName is a slice of Flag.
-type FlagsByName []Flag
-
-func (f FlagsByName) Len() int {
-	return len(f)
-}
-
-func (f FlagsByName) Less(i, j int) bool {
-	return f[i].GetName() < f[j].GetName()
-}
-
-func (f FlagsByName) Swap(i, j int) {
-	f[i], f[j] = f[j], f[i]
-}
-
-// Flag is a common interface related to parsing flags in cli.
-// For more advanced flag parsing techniques, it is recommended that
-// this interface be implemented.
-type Flag interface {
-	fmt.Stringer
-	// Apply Flag settings to the given flag set
-	Apply(*flag.FlagSet)
-	GetName() string
-}
-
-// errorableFlag is an interface that allows us to return errors during apply
-// it allows flags defined in this library to return errors in a fashion backwards compatible
-// TODO remove in v2 and modify the existing Flag interface to return errors
-type errorableFlag interface {
-	Flag
-
-	ApplyWithError(*flag.FlagSet) error
-}
-
-func flagSet(name string, flags []Flag) (*flag.FlagSet, error) {
-	set := flag.NewFlagSet(name, flag.ContinueOnError)
-
-	for _, f := range flags {
-		//TODO remove in v2 when errorableFlag is removed
-		if ef, ok := f.(errorableFlag); ok {
-			if err := ef.ApplyWithError(set); err != nil {
-				return nil, err
-			}
-		} else {
-			f.Apply(set)
-		}
-	}
-	return set, nil
-}
-
-func eachName(longName string, fn func(string)) {
-	parts := strings.Split(longName, ",")
-	for _, name := range parts {
-		name = strings.Trim(name, " ")
-		fn(name)
-	}
-}
-
-// Generic is a generic parseable type identified by a specific flag
-type Generic interface {
-	Set(value string) error
-	String() string
-}
-
-// Apply takes the flagset and calls Set on the generic flag with the value
-// provided by the user for parsing by the flag
-// Ignores parsing errors
-func (f GenericFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError takes the flagset and calls Set on the generic flag with the value
-// provided by the user for parsing by the flag
-func (f GenericFlag) ApplyWithError(set *flag.FlagSet) error {
-	val := f.Value
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				if err := val.Set(envVal); err != nil {
-					return fmt.Errorf("could not parse %s as value for flag %s: %s", envVal, f.Name, err)
-				}
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		set.Var(f.Value, name, f.Usage)
-	})
-
-	return nil
-}
-
-// StringSlice is an opaque type for []string to satisfy flag.Value and flag.Getter
-type StringSlice []string
-
-// Set appends the string value to the list of values
-func (f *StringSlice) Set(value string) error {
-	*f = append(*f, value)
-	return nil
-}
-
-// String returns a readable representation of this value (for usage defaults)
-func (f *StringSlice) String() string {
-	return fmt.Sprintf("%s", *f)
-}
-
-// Value returns the slice of strings set by this flag
-func (f *StringSlice) Value() []string {
-	return *f
-}
-
-// Get returns the slice of strings set by this flag
-func (f *StringSlice) Get() interface{} {
-	return *f
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f StringSliceFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f StringSliceFlag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				newVal := &StringSlice{}
-				for _, s := range strings.Split(envVal, ",") {
-					s = strings.TrimSpace(s)
-					if err := newVal.Set(s); err != nil {
-						return fmt.Errorf("could not parse %s as string value for flag %s: %s", envVal, f.Name, err)
-					}
-				}
-				f.Value = newVal
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Value == nil {
-			f.Value = &StringSlice{}
-		}
-		set.Var(f.Value, name, f.Usage)
-	})
-
-	return nil
-}
-
-// IntSlice is an opaque type for []int to satisfy flag.Value and flag.Getter
-type IntSlice []int
-
-// Set parses the value into an integer and appends it to the list of values
-func (f *IntSlice) Set(value string) error {
-	tmp, err := strconv.Atoi(value)
-	if err != nil {
-		return err
-	}
-	*f = append(*f, tmp)
-	return nil
-}
-
-// String returns a readable representation of this value (for usage defaults)
-func (f *IntSlice) String() string {
-	return fmt.Sprintf("%#v", *f)
-}
-
-// Value returns the slice of ints set by this flag
-func (f *IntSlice) Value() []int {
-	return *f
-}
-
-// Get returns the slice of ints set by this flag
-func (f *IntSlice) Get() interface{} {
-	return *f
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f IntSliceFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f IntSliceFlag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				newVal := &IntSlice{}
-				for _, s := range strings.Split(envVal, ",") {
-					s = strings.TrimSpace(s)
-					if err := newVal.Set(s); err != nil {
-						return fmt.Errorf("could not parse %s as int slice value for flag %s: %s", envVal, f.Name, err)
-					}
-				}
-				f.Value = newVal
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Value == nil {
-			f.Value = &IntSlice{}
-		}
-		set.Var(f.Value, name, f.Usage)
-	})
-
-	return nil
-}
-
-// Int64Slice is an opaque type for []int to satisfy flag.Value and flag.Getter
-type Int64Slice []int64
-
-// Set parses the value into an integer and appends it to the list of values
-func (f *Int64Slice) Set(value string) error {
-	tmp, err := strconv.ParseInt(value, 10, 64)
-	if err != nil {
-		return err
-	}
-	*f = append(*f, tmp)
-	return nil
-}
-
-// String returns a readable representation of this value (for usage defaults)
-func (f *Int64Slice) String() string {
-	return fmt.Sprintf("%#v", *f)
-}
-
-// Value returns the slice of ints set by this flag
-func (f *Int64Slice) Value() []int64 {
-	return *f
-}
-
-// Get returns the slice of ints set by this flag
-func (f *Int64Slice) Get() interface{} {
-	return *f
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f Int64SliceFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f Int64SliceFlag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				newVal := &Int64Slice{}
-				for _, s := range strings.Split(envVal, ",") {
-					s = strings.TrimSpace(s)
-					if err := newVal.Set(s); err != nil {
-						return fmt.Errorf("could not parse %s as int64 slice value for flag %s: %s", envVal, f.Name, err)
-					}
-				}
-				f.Value = newVal
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Value == nil {
-			f.Value = &Int64Slice{}
-		}
-		set.Var(f.Value, name, f.Usage)
-	})
-	return nil
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f BoolFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f BoolFlag) ApplyWithError(set *flag.FlagSet) error {
-	val := false
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				if envVal == "" {
-					val = false
-					break
-				}
-
-				envValBool, err := strconv.ParseBool(envVal)
-				if err != nil {
-					return fmt.Errorf("could not parse %s as bool value for flag %s: %s", envVal, f.Name, err)
-				}
-
-				val = envValBool
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.BoolVar(f.Destination, name, val, f.Usage)
-			return
-		}
-		set.Bool(name, val, f.Usage)
-	})
-
-	return nil
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f BoolTFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f BoolTFlag) ApplyWithError(set *flag.FlagSet) error {
-	val := true
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				if envVal == "" {
-					val = false
-					break
-				}
-
-				envValBool, err := strconv.ParseBool(envVal)
-				if err != nil {
-					return fmt.Errorf("could not parse %s as bool value for flag %s: %s", envVal, f.Name, err)
-				}
-
-				val = envValBool
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.BoolVar(f.Destination, name, val, f.Usage)
-			return
-		}
-		set.Bool(name, val, f.Usage)
-	})
-
-	return nil
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f StringFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f StringFlag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				f.Value = envVal
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.StringVar(f.Destination, name, f.Value, f.Usage)
-			return
-		}
-		set.String(name, f.Value, f.Usage)
-	})
-
-	return nil
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f IntFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f IntFlag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				envValInt, err := strconv.ParseInt(envVal, 0, 64)
-				if err != nil {
-					return fmt.Errorf("could not parse %s as int value for flag %s: %s", envVal, f.Name, err)
-				}
-				f.Value = int(envValInt)
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.IntVar(f.Destination, name, f.Value, f.Usage)
-			return
-		}
-		set.Int(name, f.Value, f.Usage)
-	})
-
-	return nil
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f Int64Flag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f Int64Flag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				envValInt, err := strconv.ParseInt(envVal, 0, 64)
-				if err != nil {
-					return fmt.Errorf("could not parse %s as int value for flag %s: %s", envVal, f.Name, err)
-				}
-
-				f.Value = envValInt
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.Int64Var(f.Destination, name, f.Value, f.Usage)
-			return
-		}
-		set.Int64(name, f.Value, f.Usage)
-	})
-
-	return nil
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f UintFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f UintFlag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				envValInt, err := strconv.ParseUint(envVal, 0, 64)
-				if err != nil {
-					return fmt.Errorf("could not parse %s as uint value for flag %s: %s", envVal, f.Name, err)
-				}
-
-				f.Value = uint(envValInt)
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.UintVar(f.Destination, name, f.Value, f.Usage)
-			return
-		}
-		set.Uint(name, f.Value, f.Usage)
-	})
-
-	return nil
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f Uint64Flag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f Uint64Flag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				envValInt, err := strconv.ParseUint(envVal, 0, 64)
-				if err != nil {
-					return fmt.Errorf("could not parse %s as uint64 value for flag %s: %s", envVal, f.Name, err)
-				}
-
-				f.Value = uint64(envValInt)
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.Uint64Var(f.Destination, name, f.Value, f.Usage)
-			return
-		}
-		set.Uint64(name, f.Value, f.Usage)
-	})
-
-	return nil
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f DurationFlag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f DurationFlag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				envValDuration, err := time.ParseDuration(envVal)
-				if err != nil {
-					return fmt.Errorf("could not parse %s as duration for flag %s: %s", envVal, f.Name, err)
-				}
-
-				f.Value = envValDuration
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.DurationVar(f.Destination, name, f.Value, f.Usage)
-			return
-		}
-		set.Duration(name, f.Value, f.Usage)
-	})
-
-	return nil
-}
-
-// Apply populates the flag given the flag set and environment
-// Ignores errors
-func (f Float64Flag) Apply(set *flag.FlagSet) {
-	f.ApplyWithError(set)
-}
-
-// ApplyWithError populates the flag given the flag set and environment
-func (f Float64Flag) ApplyWithError(set *flag.FlagSet) error {
-	if f.EnvVar != "" {
-		for _, envVar := range strings.Split(f.EnvVar, ",") {
-			envVar = strings.TrimSpace(envVar)
-			if envVal, ok := syscall.Getenv(envVar); ok {
-				envValFloat, err := strconv.ParseFloat(envVal, 10)
-				if err != nil {
-					return fmt.Errorf("could not parse %s as float64 value for flag %s: %s", envVal, f.Name, err)
-				}
-
-				f.Value = float64(envValFloat)
-				break
-			}
-		}
-	}
-
-	eachName(f.Name, func(name string) {
-		if f.Destination != nil {
-			set.Float64Var(f.Destination, name, f.Value, f.Usage)
-			return
-		}
-		set.Float64(name, f.Value, f.Usage)
-	})
-
-	return nil
-}
-
-func visibleFlags(fl []Flag) []Flag {
-	visible := []Flag{}
-	for _, flag := range fl {
-		if !flagValue(flag).FieldByName("Hidden").Bool() {
-			visible = append(visible, flag)
-		}
-	}
-	return visible
-}
-
-func prefixFor(name string) (prefix string) {
-	if len(name) == 1 {
-		prefix = "-"
-	} else {
-		prefix = "--"
-	}
-
-	return
-}
-
-// Returns the placeholder, if any, and the unquoted usage string.
-func unquoteUsage(usage string) (string, string) {
-	for i := 0; i < len(usage); i++ {
-		if usage[i] == '`' {
-			for j := i + 1; j < len(usage); j++ {
-				if usage[j] == '`' {
-					name := usage[i+1 : j]
-					usage = usage[:i] + name + usage[j+1:]
-					return name, usage
-				}
-			}
-			break
-		}
-	}
-	return "", usage
-}
-
-func prefixedNames(fullName, placeholder string) string {
-	var prefixed string
-	parts := strings.Split(fullName, ",")
-	for i, name := range parts {
-		name = strings.Trim(name, " ")
-		prefixed += prefixFor(name) + name
-		if placeholder != "" {
-			prefixed += " " + placeholder
-		}
-		if i < len(parts)-1 {
-			prefixed += ", "
-		}
-	}
-	return prefixed
-}
-
-func withEnvHint(envVar, str string) string {
-	envText := ""
-	if envVar != "" {
-		prefix := "$"
-		suffix := ""
-		sep := ", $"
-		if runtime.GOOS == "windows" {
-			prefix = "%"
-			suffix = "%"
-			sep = "%, %"
-		}
-		envText = fmt.Sprintf(" [%s%s%s]", prefix, strings.Join(strings.Split(envVar, ","), sep), suffix)
-	}
-	return str + envText
-}
-
-func flagValue(f Flag) reflect.Value {
-	fv := reflect.ValueOf(f)
-	for fv.Kind() == reflect.Ptr {
-		fv = reflect.Indirect(fv)
-	}
-	return fv
-}
-
-func stringifyFlag(f Flag) string {
-	fv := flagValue(f)
-
-	switch f.(type) {
-	case IntSliceFlag:
-		return withEnvHint(fv.FieldByName("EnvVar").String(),
-			stringifyIntSliceFlag(f.(IntSliceFlag)))
-	case Int64SliceFlag:
-		return withEnvHint(fv.FieldByName("EnvVar").String(),
-			stringifyInt64SliceFlag(f.(Int64SliceFlag)))
-	case StringSliceFlag:
-		return withEnvHint(fv.FieldByName("EnvVar").String(),
-			stringifyStringSliceFlag(f.(StringSliceFlag)))
-	}
-
-	placeholder, usage := unquoteUsage(fv.FieldByName("Usage").String())
-
-	needsPlaceholder := false
-	defaultValueString := ""
-	val := fv.FieldByName("Value")
-
-	if val.IsValid() {
-		needsPlaceholder = true
-		defaultValueString = fmt.Sprintf(" (default: %v)", val.Interface())
-
-		if val.Kind() == reflect.String && val.String() != "" {
-			defaultValueString = fmt.Sprintf(" (default: %q)", val.String())
-		}
-	}
-
-	if defaultValueString == " (default: )" {
-		defaultValueString = ""
-	}
-
-	if needsPlaceholder && placeholder == "" {
-		placeholder = defaultPlaceholder
-	}
-
-	usageWithDefault := strings.TrimSpace(fmt.Sprintf("%s%s", usage, defaultValueString))
-
-	return withEnvHint(fv.FieldByName("EnvVar").String(),
-		fmt.Sprintf("%s\t%s", prefixedNames(fv.FieldByName("Name").String(), placeholder), usageWithDefault))
-}
-
-func stringifyIntSliceFlag(f IntSliceFlag) string {
-	defaultVals := []string{}
-	if f.Value != nil && len(f.Value.Value()) > 0 {
-		for _, i := range f.Value.Value() {
-			defaultVals = append(defaultVals, fmt.Sprintf("%d", i))
-		}
-	}
-
-	return stringifySliceFlag(f.Usage, f.Name, defaultVals)
-}
-
-func stringifyInt64SliceFlag(f Int64SliceFlag) string {
-	defaultVals := []string{}
-	if f.Value != nil && len(f.Value.Value()) > 0 {
-		for _, i := range f.Value.Value() {
-			defaultVals = append(defaultVals, fmt.Sprintf("%d", i))
-		}
-	}
-
-	return stringifySliceFlag(f.Usage, f.Name, defaultVals)
-}
-
-func stringifyStringSliceFlag(f StringSliceFlag) string {
-	defaultVals := []string{}
-	if f.Value != nil && len(f.Value.Value()) > 0 {
-		for _, s := range f.Value.Value() {
-			if len(s) > 0 {
-				defaultVals = append(defaultVals, fmt.Sprintf("%q", s))
-			}
-		}
-	}
-
-	return stringifySliceFlag(f.Usage, f.Name, defaultVals)
-}
-
-func stringifySliceFlag(usage, name string, defaultVals []string) string {
-	placeholder, usage := unquoteUsage(usage)
-	if placeholder == "" {
-		placeholder = defaultPlaceholder
-	}
-
-	defaultVal := ""
-	if len(defaultVals) > 0 {
-		defaultVal = fmt.Sprintf(" (default: %s)", strings.Join(defaultVals, ", "))
-	}
-
-	usageWithDefault := strings.TrimSpace(fmt.Sprintf("%s%s", usage, defaultVal))
-	return fmt.Sprintf("%s\t%s", prefixedNames(name, placeholder), usageWithDefault)
-}
diff --git a/vendor/github.com/codegangsta/cli/flag_generated.go b/vendor/github.com/codegangsta/cli/flag_generated.go
deleted file mode 100644
index 491b619..0000000
--- a/vendor/github.com/codegangsta/cli/flag_generated.go
+++ /dev/null
@@ -1,627 +0,0 @@
-package cli
-
-import (
-	"flag"
-	"strconv"
-	"time"
-)
-
-// WARNING: This file is generated!
-
-// BoolFlag is a flag with type bool
-type BoolFlag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	Hidden      bool
-	Destination *bool
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f BoolFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f BoolFlag) GetName() string {
-	return f.Name
-}
-
-// Bool looks up the value of a local BoolFlag, returns
-// false if not found
-func (c *Context) Bool(name string) bool {
-	return lookupBool(name, c.flagSet)
-}
-
-// GlobalBool looks up the value of a global BoolFlag, returns
-// false if not found
-func (c *Context) GlobalBool(name string) bool {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupBool(name, fs)
-	}
-	return false
-}
-
-func lookupBool(name string, set *flag.FlagSet) bool {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := strconv.ParseBool(f.Value.String())
-		if err != nil {
-			return false
-		}
-		return parsed
-	}
-	return false
-}
-
-// BoolTFlag is a flag with type bool that is true by default
-type BoolTFlag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	Hidden      bool
-	Destination *bool
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f BoolTFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f BoolTFlag) GetName() string {
-	return f.Name
-}
-
-// BoolT looks up the value of a local BoolTFlag, returns
-// false if not found
-func (c *Context) BoolT(name string) bool {
-	return lookupBoolT(name, c.flagSet)
-}
-
-// GlobalBoolT looks up the value of a global BoolTFlag, returns
-// false if not found
-func (c *Context) GlobalBoolT(name string) bool {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupBoolT(name, fs)
-	}
-	return false
-}
-
-func lookupBoolT(name string, set *flag.FlagSet) bool {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := strconv.ParseBool(f.Value.String())
-		if err != nil {
-			return false
-		}
-		return parsed
-	}
-	return false
-}
-
-// DurationFlag is a flag with type time.Duration (see https://golang.org/pkg/time/#ParseDuration)
-type DurationFlag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	Hidden      bool
-	Value       time.Duration
-	Destination *time.Duration
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f DurationFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f DurationFlag) GetName() string {
-	return f.Name
-}
-
-// Duration looks up the value of a local DurationFlag, returns
-// 0 if not found
-func (c *Context) Duration(name string) time.Duration {
-	return lookupDuration(name, c.flagSet)
-}
-
-// GlobalDuration looks up the value of a global DurationFlag, returns
-// 0 if not found
-func (c *Context) GlobalDuration(name string) time.Duration {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupDuration(name, fs)
-	}
-	return 0
-}
-
-func lookupDuration(name string, set *flag.FlagSet) time.Duration {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := time.ParseDuration(f.Value.String())
-		if err != nil {
-			return 0
-		}
-		return parsed
-	}
-	return 0
-}
-
-// Float64Flag is a flag with type float64
-type Float64Flag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	Hidden      bool
-	Value       float64
-	Destination *float64
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f Float64Flag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f Float64Flag) GetName() string {
-	return f.Name
-}
-
-// Float64 looks up the value of a local Float64Flag, returns
-// 0 if not found
-func (c *Context) Float64(name string) float64 {
-	return lookupFloat64(name, c.flagSet)
-}
-
-// GlobalFloat64 looks up the value of a global Float64Flag, returns
-// 0 if not found
-func (c *Context) GlobalFloat64(name string) float64 {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupFloat64(name, fs)
-	}
-	return 0
-}
-
-func lookupFloat64(name string, set *flag.FlagSet) float64 {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := strconv.ParseFloat(f.Value.String(), 64)
-		if err != nil {
-			return 0
-		}
-		return parsed
-	}
-	return 0
-}
-
-// GenericFlag is a flag with type Generic
-type GenericFlag struct {
-	Name   string
-	Usage  string
-	EnvVar string
-	Hidden bool
-	Value  Generic
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f GenericFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f GenericFlag) GetName() string {
-	return f.Name
-}
-
-// Generic looks up the value of a local GenericFlag, returns
-// nil if not found
-func (c *Context) Generic(name string) interface{} {
-	return lookupGeneric(name, c.flagSet)
-}
-
-// GlobalGeneric looks up the value of a global GenericFlag, returns
-// nil if not found
-func (c *Context) GlobalGeneric(name string) interface{} {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupGeneric(name, fs)
-	}
-	return nil
-}
-
-func lookupGeneric(name string, set *flag.FlagSet) interface{} {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := f.Value, error(nil)
-		if err != nil {
-			return nil
-		}
-		return parsed
-	}
-	return nil
-}
-
-// Int64Flag is a flag with type int64
-type Int64Flag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	Hidden      bool
-	Value       int64
-	Destination *int64
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f Int64Flag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f Int64Flag) GetName() string {
-	return f.Name
-}
-
-// Int64 looks up the value of a local Int64Flag, returns
-// 0 if not found
-func (c *Context) Int64(name string) int64 {
-	return lookupInt64(name, c.flagSet)
-}
-
-// GlobalInt64 looks up the value of a global Int64Flag, returns
-// 0 if not found
-func (c *Context) GlobalInt64(name string) int64 {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupInt64(name, fs)
-	}
-	return 0
-}
-
-func lookupInt64(name string, set *flag.FlagSet) int64 {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := strconv.ParseInt(f.Value.String(), 0, 64)
-		if err != nil {
-			return 0
-		}
-		return parsed
-	}
-	return 0
-}
-
-// IntFlag is a flag with type int
-type IntFlag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	Hidden      bool
-	Value       int
-	Destination *int
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f IntFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f IntFlag) GetName() string {
-	return f.Name
-}
-
-// Int looks up the value of a local IntFlag, returns
-// 0 if not found
-func (c *Context) Int(name string) int {
-	return lookupInt(name, c.flagSet)
-}
-
-// GlobalInt looks up the value of a global IntFlag, returns
-// 0 if not found
-func (c *Context) GlobalInt(name string) int {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupInt(name, fs)
-	}
-	return 0
-}
-
-func lookupInt(name string, set *flag.FlagSet) int {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := strconv.ParseInt(f.Value.String(), 0, 64)
-		if err != nil {
-			return 0
-		}
-		return int(parsed)
-	}
-	return 0
-}
-
-// IntSliceFlag is a flag with type *IntSlice
-type IntSliceFlag struct {
-	Name   string
-	Usage  string
-	EnvVar string
-	Hidden bool
-	Value  *IntSlice
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f IntSliceFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f IntSliceFlag) GetName() string {
-	return f.Name
-}
-
-// IntSlice looks up the value of a local IntSliceFlag, returns
-// nil if not found
-func (c *Context) IntSlice(name string) []int {
-	return lookupIntSlice(name, c.flagSet)
-}
-
-// GlobalIntSlice looks up the value of a global IntSliceFlag, returns
-// nil if not found
-func (c *Context) GlobalIntSlice(name string) []int {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupIntSlice(name, fs)
-	}
-	return nil
-}
-
-func lookupIntSlice(name string, set *flag.FlagSet) []int {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := (f.Value.(*IntSlice)).Value(), error(nil)
-		if err != nil {
-			return nil
-		}
-		return parsed
-	}
-	return nil
-}
-
-// Int64SliceFlag is a flag with type *Int64Slice
-type Int64SliceFlag struct {
-	Name   string
-	Usage  string
-	EnvVar string
-	Hidden bool
-	Value  *Int64Slice
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f Int64SliceFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f Int64SliceFlag) GetName() string {
-	return f.Name
-}
-
-// Int64Slice looks up the value of a local Int64SliceFlag, returns
-// nil if not found
-func (c *Context) Int64Slice(name string) []int64 {
-	return lookupInt64Slice(name, c.flagSet)
-}
-
-// GlobalInt64Slice looks up the value of a global Int64SliceFlag, returns
-// nil if not found
-func (c *Context) GlobalInt64Slice(name string) []int64 {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupInt64Slice(name, fs)
-	}
-	return nil
-}
-
-func lookupInt64Slice(name string, set *flag.FlagSet) []int64 {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := (f.Value.(*Int64Slice)).Value(), error(nil)
-		if err != nil {
-			return nil
-		}
-		return parsed
-	}
-	return nil
-}
-
-// StringFlag is a flag with type string
-type StringFlag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	Hidden      bool
-	Value       string
-	Destination *string
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f StringFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f StringFlag) GetName() string {
-	return f.Name
-}
-
-// String looks up the value of a local StringFlag, returns
-// "" if not found
-func (c *Context) String(name string) string {
-	return lookupString(name, c.flagSet)
-}
-
-// GlobalString looks up the value of a global StringFlag, returns
-// "" if not found
-func (c *Context) GlobalString(name string) string {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupString(name, fs)
-	}
-	return ""
-}
-
-func lookupString(name string, set *flag.FlagSet) string {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := f.Value.String(), error(nil)
-		if err != nil {
-			return ""
-		}
-		return parsed
-	}
-	return ""
-}
-
-// StringSliceFlag is a flag with type *StringSlice
-type StringSliceFlag struct {
-	Name   string
-	Usage  string
-	EnvVar string
-	Hidden bool
-	Value  *StringSlice
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f StringSliceFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f StringSliceFlag) GetName() string {
-	return f.Name
-}
-
-// StringSlice looks up the value of a local StringSliceFlag, returns
-// nil if not found
-func (c *Context) StringSlice(name string) []string {
-	return lookupStringSlice(name, c.flagSet)
-}
-
-// GlobalStringSlice looks up the value of a global StringSliceFlag, returns
-// nil if not found
-func (c *Context) GlobalStringSlice(name string) []string {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupStringSlice(name, fs)
-	}
-	return nil
-}
-
-func lookupStringSlice(name string, set *flag.FlagSet) []string {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := (f.Value.(*StringSlice)).Value(), error(nil)
-		if err != nil {
-			return nil
-		}
-		return parsed
-	}
-	return nil
-}
-
-// Uint64Flag is a flag with type uint64
-type Uint64Flag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	Hidden      bool
-	Value       uint64
-	Destination *uint64
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f Uint64Flag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f Uint64Flag) GetName() string {
-	return f.Name
-}
-
-// Uint64 looks up the value of a local Uint64Flag, returns
-// 0 if not found
-func (c *Context) Uint64(name string) uint64 {
-	return lookupUint64(name, c.flagSet)
-}
-
-// GlobalUint64 looks up the value of a global Uint64Flag, returns
-// 0 if not found
-func (c *Context) GlobalUint64(name string) uint64 {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupUint64(name, fs)
-	}
-	return 0
-}
-
-func lookupUint64(name string, set *flag.FlagSet) uint64 {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := strconv.ParseUint(f.Value.String(), 0, 64)
-		if err != nil {
-			return 0
-		}
-		return parsed
-	}
-	return 0
-}
-
-// UintFlag is a flag with type uint
-type UintFlag struct {
-	Name        string
-	Usage       string
-	EnvVar      string
-	Hidden      bool
-	Value       uint
-	Destination *uint
-}
-
-// String returns a readable representation of this value
-// (for usage defaults)
-func (f UintFlag) String() string {
-	return FlagStringer(f)
-}
-
-// GetName returns the name of the flag
-func (f UintFlag) GetName() string {
-	return f.Name
-}
-
-// Uint looks up the value of a local UintFlag, returns
-// 0 if not found
-func (c *Context) Uint(name string) uint {
-	return lookupUint(name, c.flagSet)
-}
-
-// GlobalUint looks up the value of a global UintFlag, returns
-// 0 if not found
-func (c *Context) GlobalUint(name string) uint {
-	if fs := lookupGlobalFlagSet(name, c); fs != nil {
-		return lookupUint(name, fs)
-	}
-	return 0
-}
-
-func lookupUint(name string, set *flag.FlagSet) uint {
-	f := set.Lookup(name)
-	if f != nil {
-		parsed, err := strconv.ParseUint(f.Value.String(), 0, 64)
-		if err != nil {
-			return 0
-		}
-		return uint(parsed)
-	}
-	return 0
-}
diff --git a/vendor/github.com/codegangsta/cli/generate-flag-types b/vendor/github.com/codegangsta/cli/generate-flag-types
deleted file mode 100755
index 7147381..0000000
--- a/vendor/github.com/codegangsta/cli/generate-flag-types
+++ /dev/null
@@ -1,255 +0,0 @@
-#!/usr/bin/env python
-"""
-The flag types that ship with the cli library have many things in common, and
-so we can take advantage of the `go generate` command to create much of the
-source code from a list of definitions.  These definitions attempt to cover
-the parts that vary between flag types, and should evolve as needed.
-
-An example of the minimum definition needed is:
-
-    {
-      "name": "SomeType",
-      "type": "sometype",
-      "context_default": "nil"
-    }
-
-In this example, the code generated for the `cli` package will include a type
-named `SomeTypeFlag` that is expected to wrap a value of type `sometype`.
-Fetching values by name via `*cli.Context` will default to a value of `nil`.
-
-A more complete, albeit somewhat redundant, example showing all available
-definition keys is:
-
-    {
-      "name": "VeryMuchType",
-      "type": "*VeryMuchType",
-      "value": true,
-      "dest": false,
-      "doctail": " which really only wraps a []float64, oh well!",
-      "context_type": "[]float64",
-      "context_default": "nil",
-      "parser": "parseVeryMuchType(f.Value.String())",
-      "parser_cast": "[]float64(parsed)"
-    }
-
-The meaning of each field is as follows:
-
-               name (string) - The type "name", which will be suffixed with
-                               `Flag` when generating the type definition
-                               for `cli` and the wrapper type for `altsrc`
-               type (string) - The type that the generated `Flag` type for `cli`
-                               is expected to "contain" as its `.Value` member
-                value (bool) - Should the generated `cli` type have a `Value`
-                               member?
-                 dest (bool) - Should the generated `cli` type support a
-                               destination pointer?
-            doctail (string) - Additional docs for the `cli` flag type comment
-       context_type (string) - The literal type used in the `*cli.Context`
-                               reader func signature
-    context_default (string) - The literal value used as the default by the
-                               `*cli.Context` reader funcs when no value is
-                               present
-             parser (string) - Literal code used to parse the flag `f`,
-                               expected to have a return signature of
-                               (value, error)
-        parser_cast (string) - Literal code used to cast the `parsed` value
-                               returned from the `parser` code
-"""
-
-from __future__ import print_function, unicode_literals
-
-import argparse
-import json
-import os
-import subprocess
-import sys
-import tempfile
-import textwrap
-
-
-class _FancyFormatter(argparse.ArgumentDefaultsHelpFormatter,
-                      argparse.RawDescriptionHelpFormatter):
-    pass
-
-
-def main(sysargs=sys.argv[:]):
-    parser = argparse.ArgumentParser(
-        description='Generate flag type code!',
-        formatter_class=_FancyFormatter)
-    parser.add_argument(
-        'package',
-        type=str, default='cli', choices=_WRITEFUNCS.keys(),
-        help='Package for which flag types will be generated'
-    )
-    parser.add_argument(
-        '-i', '--in-json',
-        type=argparse.FileType('r'),
-        default=sys.stdin,
-        help='Input JSON file which defines each type to be generated'
-    )
-    parser.add_argument(
-        '-o', '--out-go',
-        type=argparse.FileType('w'),
-        default=sys.stdout,
-        help='Output file/stream to which generated source will be written'
-    )
-    parser.epilog = __doc__
-
-    args = parser.parse_args(sysargs[1:])
-    _generate_flag_types(_WRITEFUNCS[args.package], args.out_go, args.in_json)
-    return 0
-
-
-def _generate_flag_types(writefunc, output_go, input_json):
-    types = json.load(input_json)
-
-    tmp = tempfile.NamedTemporaryFile(suffix='.go', delete=False)
-    writefunc(tmp, types)
-    tmp.close()
-
-    new_content = subprocess.check_output(
-        ['goimports', tmp.name]
-    ).decode('utf-8')
-
-    print(new_content, file=output_go, end='')
-    output_go.flush()
-    os.remove(tmp.name)
-
-
-def _set_typedef_defaults(typedef):
-    typedef.setdefault('doctail', '')
-    typedef.setdefault('context_type', typedef['type'])
-    typedef.setdefault('dest', True)
-    typedef.setdefault('value', True)
-    typedef.setdefault('parser', 'f.Value, error(nil)')
-    typedef.setdefault('parser_cast', 'parsed')
-
-
-def _write_cli_flag_types(outfile, types):
-    _fwrite(outfile, """\
-        package cli
-
-        // WARNING: This file is generated!
-
-        """)
-
-    for typedef in types:
-        _set_typedef_defaults(typedef)
-
-        _fwrite(outfile, """\
-        // {name}Flag is a flag with type {type}{doctail}
-        type {name}Flag struct {{
-            Name string
-            Usage string
-            EnvVar string
-            Hidden bool
-        """.format(**typedef))
-
-        if typedef['value']:
-            _fwrite(outfile, """\
-            Value {type}
-            """.format(**typedef))
-
-        if typedef['dest']:
-            _fwrite(outfile, """\
-            Destination *{type}
-            """.format(**typedef))
-
-        _fwrite(outfile, "\n}\n\n")
-
-        _fwrite(outfile, """\
-            // String returns a readable representation of this value
-            // (for usage defaults)
-            func (f {name}Flag) String() string {{
-                return FlagStringer(f)
-            }}
-
-            // GetName returns the name of the flag
-            func (f {name}Flag) GetName() string {{
-                return f.Name
-            }}
-
-            // {name} looks up the value of a local {name}Flag, returns
-            // {context_default} if not found
-            func (c *Context) {name}(name string) {context_type} {{
-                return lookup{name}(name, c.flagSet)
-            }}
-
-            // Global{name} looks up the value of a global {name}Flag, returns
-            // {context_default} if not found
-            func (c *Context) Global{name}(name string) {context_type} {{
-                if fs := lookupGlobalFlagSet(name, c); fs != nil {{
-                    return lookup{name}(name, fs)
-                }}
-                return {context_default}
-            }}
-
-            func lookup{name}(name string, set *flag.FlagSet) {context_type} {{
-                f := set.Lookup(name)
-                if f != nil {{
-                    parsed, err := {parser}
-                    if err != nil {{
-                        return {context_default}
-                    }}
-                    return {parser_cast}
-                }}
-                return {context_default}
-            }}
-            """.format(**typedef))
-
-
-def _write_altsrc_flag_types(outfile, types):
-    _fwrite(outfile, """\
-        package altsrc
-
-        import (
-            "gopkg.in/urfave/cli.v1"
-        )
-
-        // WARNING: This file is generated!
-
-        """)
-
-    for typedef in types:
-        _set_typedef_defaults(typedef)
-
-        _fwrite(outfile, """\
-        // {name}Flag is the flag type that wraps cli.{name}Flag to allow
-        // for other values to be specified
-        type {name}Flag struct {{
-            cli.{name}Flag
-            set *flag.FlagSet
-        }}
-
-        // New{name}Flag creates a new {name}Flag
-        func New{name}Flag(fl cli.{name}Flag) *{name}Flag {{
-            return &{name}Flag{{{name}Flag: fl, set: nil}}
-        }}
-
-        // Apply saves the flagSet for later usage calls, then calls the
-        // wrapped {name}Flag.Apply
-        func (f *{name}Flag) Apply(set *flag.FlagSet) {{
-            f.set = set
-            f.{name}Flag.Apply(set)
-        }}
-
-        // ApplyWithError saves the flagSet for later usage calls, then calls the
-        // wrapped {name}Flag.ApplyWithError
-        func (f *{name}Flag) ApplyWithError(set *flag.FlagSet) error {{
-            f.set = set
-            return f.{name}Flag.ApplyWithError(set)
-        }}
-        """.format(**typedef))
-
-
-def _fwrite(outfile, text):
-    print(textwrap.dedent(text), end='', file=outfile)
-
-
-_WRITEFUNCS = {
-    'cli': _write_cli_flag_types,
-    'altsrc': _write_altsrc_flag_types
-}
-
-if __name__ == '__main__':
-    sys.exit(main())
diff --git a/vendor/github.com/codegangsta/cli/help.go b/vendor/github.com/codegangsta/cli/help.go
deleted file mode 100644
index c8c1aee..0000000
--- a/vendor/github.com/codegangsta/cli/help.go
+++ /dev/null
@@ -1,294 +0,0 @@
-package cli
-
-import (
-	"fmt"
-	"io"
-	"os"
-	"strings"
-	"text/tabwriter"
-	"text/template"
-)
-
-// AppHelpTemplate is the text template for the Default help topic.
-// cli.go uses text/template to render templates. You can
-// render custom help text by setting this variable.
-var AppHelpTemplate = `NAME:
-   {{.Name}}{{if .Usage}} - {{.Usage}}{{end}}
-
-USAGE:
-   {{if .UsageText}}{{.UsageText}}{{else}}{{.HelpName}} {{if .VisibleFlags}}[global options]{{end}}{{if .Commands}} command [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}}{{if .Version}}{{if not .HideVersion}}
-
-VERSION:
-   {{.Version}}{{end}}{{end}}{{if .Description}}
-
-DESCRIPTION:
-   {{.Description}}{{end}}{{if len .Authors}}
-
-AUTHOR{{with $length := len .Authors}}{{if ne 1 $length}}S{{end}}{{end}}:
-   {{range $index, $author := .Authors}}{{if $index}}
-   {{end}}{{$author}}{{end}}{{end}}{{if .VisibleCommands}}
-
-COMMANDS:{{range .VisibleCategories}}{{if .Name}}
-   {{.Name}}:{{end}}{{range .VisibleCommands}}
-     {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{end}}{{end}}{{if .VisibleFlags}}
-
-GLOBAL OPTIONS:
-   {{range $index, $option := .VisibleFlags}}{{if $index}}
-   {{end}}{{$option}}{{end}}{{end}}{{if .Copyright}}
-
-COPYRIGHT:
-   {{.Copyright}}{{end}}
-`
-
-// CommandHelpTemplate is the text template for the command help topic.
-// cli.go uses text/template to render templates. You can
-// render custom help text by setting this variable.
-var CommandHelpTemplate = `NAME:
-   {{.HelpName}} - {{.Usage}}
-
-USAGE:
-   {{.HelpName}}{{if .VisibleFlags}} [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{if .Category}}
-
-CATEGORY:
-   {{.Category}}{{end}}{{if .Description}}
-
-DESCRIPTION:
-   {{.Description}}{{end}}{{if .VisibleFlags}}
-
-OPTIONS:
-   {{range .VisibleFlags}}{{.}}
-   {{end}}{{end}}
-`
-
-// SubcommandHelpTemplate is the text template for the subcommand help topic.
-// cli.go uses text/template to render templates. You can
-// render custom help text by setting this variable.
-var SubcommandHelpTemplate = `NAME:
-   {{.HelpName}} - {{.Usage}}
-
-USAGE:
-   {{.HelpName}} command{{if .VisibleFlags}} [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}
-
-COMMANDS:{{range .VisibleCategories}}{{if .Name}}
-   {{.Name}}:{{end}}{{range .VisibleCommands}}
-     {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}
-{{end}}{{if .VisibleFlags}}
-OPTIONS:
-   {{range .VisibleFlags}}{{.}}
-   {{end}}{{end}}
-`
-
-var helpCommand = Command{
-	Name:      "help",
-	Aliases:   []string{"h"},
-	Usage:     "Shows a list of commands or help for one command",
-	ArgsUsage: "[command]",
-	Action: func(c *Context) error {
-		args := c.Args()
-		if args.Present() {
-			return ShowCommandHelp(c, args.First())
-		}
-
-		ShowAppHelp(c)
-		return nil
-	},
-}
-
-var helpSubcommand = Command{
-	Name:      "help",
-	Aliases:   []string{"h"},
-	Usage:     "Shows a list of commands or help for one command",
-	ArgsUsage: "[command]",
-	Action: func(c *Context) error {
-		args := c.Args()
-		if args.Present() {
-			return ShowCommandHelp(c, args.First())
-		}
-
-		return ShowSubcommandHelp(c)
-	},
-}
-
-// Prints help for the App or Command
-type helpPrinter func(w io.Writer, templ string, data interface{})
-
-// HelpPrinter is a function that writes the help output. If not set a default
-// is used. The function signature is:
-// func(w io.Writer, templ string, data interface{})
-var HelpPrinter helpPrinter = printHelp
-
-// VersionPrinter prints the version for the App
-var VersionPrinter = printVersion
-
-// ShowAppHelp is an action that displays the help.
-func ShowAppHelp(c *Context) error {
-	HelpPrinter(c.App.Writer, AppHelpTemplate, c.App)
-	return nil
-}
-
-// DefaultAppComplete prints the list of subcommands as the default app completion method
-func DefaultAppComplete(c *Context) {
-	for _, command := range c.App.Commands {
-		if command.Hidden {
-			continue
-		}
-		for _, name := range command.Names() {
-			fmt.Fprintln(c.App.Writer, name)
-		}
-	}
-}
-
-// ShowCommandHelp prints help for the given command
-func ShowCommandHelp(ctx *Context, command string) error {
-	// show the subcommand help for a command with subcommands
-	if command == "" {
-		HelpPrinter(ctx.App.Writer, SubcommandHelpTemplate, ctx.App)
-		return nil
-	}
-
-	for _, c := range ctx.App.Commands {
-		if c.HasName(command) {
-			HelpPrinter(ctx.App.Writer, CommandHelpTemplate, c)
-			return nil
-		}
-	}
-
-	if ctx.App.CommandNotFound == nil {
-		return NewExitError(fmt.Sprintf("No help topic for '%v'", command), 3)
-	}
-
-	ctx.App.CommandNotFound(ctx, command)
-	return nil
-}
-
-// ShowSubcommandHelp prints help for the given subcommand
-func ShowSubcommandHelp(c *Context) error {
-	return ShowCommandHelp(c, c.Command.Name)
-}
-
-// ShowVersion prints the version number of the App
-func ShowVersion(c *Context) {
-	VersionPrinter(c)
-}
-
-func printVersion(c *Context) {
-	fmt.Fprintf(c.App.Writer, "%v version %v\n", c.App.Name, c.App.Version)
-}
-
-// ShowCompletions prints the lists of commands within a given context
-func ShowCompletions(c *Context) {
-	a := c.App
-	if a != nil && a.BashComplete != nil {
-		a.BashComplete(c)
-	}
-}
-
-// ShowCommandCompletions prints the custom completions for a given command
-func ShowCommandCompletions(ctx *Context, command string) {
-	c := ctx.App.Command(command)
-	if c != nil && c.BashComplete != nil {
-		c.BashComplete(ctx)
-	}
-}
-
-func printHelp(out io.Writer, templ string, data interface{}) {
-	funcMap := template.FuncMap{
-		"join": strings.Join,
-	}
-
-	w := tabwriter.NewWriter(out, 1, 8, 2, ' ', 0)
-	t := template.Must(template.New("help").Funcs(funcMap).Parse(templ))
-	err := t.Execute(w, data)
-	if err != nil {
-		// If the writer is closed, t.Execute will fail, and there's nothing
-		// we can do to recover.
-		if os.Getenv("CLI_TEMPLATE_ERROR_DEBUG") != "" {
-			fmt.Fprintf(ErrWriter, "CLI TEMPLATE ERROR: %#v\n", err)
-		}
-		return
-	}
-	w.Flush()
-}
-
-func checkVersion(c *Context) bool {
-	found := false
-	if VersionFlag.Name != "" {
-		eachName(VersionFlag.Name, func(name string) {
-			if c.GlobalBool(name) || c.Bool(name) {
-				found = true
-			}
-		})
-	}
-	return found
-}
-
-func checkHelp(c *Context) bool {
-	found := false
-	if HelpFlag.Name != "" {
-		eachName(HelpFlag.Name, func(name string) {
-			if c.GlobalBool(name) || c.Bool(name) {
-				found = true
-			}
-		})
-	}
-	return found
-}
-
-func checkCommandHelp(c *Context, name string) bool {
-	if c.Bool("h") || c.Bool("help") {
-		ShowCommandHelp(c, name)
-		return true
-	}
-
-	return false
-}
-
-func checkSubcommandHelp(c *Context) bool {
-	if c.Bool("h") || c.Bool("help") {
-		ShowSubcommandHelp(c)
-		return true
-	}
-
-	return false
-}
-
-func checkShellCompleteFlag(a *App, arguments []string) (bool, []string) {
-	if !a.EnableBashCompletion {
-		return false, arguments
-	}
-
-	pos := len(arguments) - 1
-	lastArg := arguments[pos]
-
-	if lastArg != "--"+BashCompletionFlag.Name {
-		return false, arguments
-	}
-
-	return true, arguments[:pos]
-}
-
-func checkCompletions(c *Context) bool {
-	if !c.shellComplete {
-		return false
-	}
-
-	if args := c.Args(); args.Present() {
-		name := args.First()
-		if cmd := c.App.Command(name); cmd != nil {
-			// let the command handle the completion
-			return false
-		}
-	}
-
-	ShowCompletions(c)
-	return true
-}
-
-func checkCommandCompletions(c *Context, name string) bool {
-	if !c.shellComplete {
-		return false
-	}
-
-	ShowCommandCompletions(c, name)
-	return true
-}
diff --git a/vendor/github.com/codegangsta/cli/runtests b/vendor/github.com/codegangsta/cli/runtests
deleted file mode 100755
index ee22bde..0000000
--- a/vendor/github.com/codegangsta/cli/runtests
+++ /dev/null
@@ -1,122 +0,0 @@
-#!/usr/bin/env python
-from __future__ import print_function
-
-import argparse
-import os
-import sys
-import tempfile
-
-from subprocess import check_call, check_output
-
-
-PACKAGE_NAME = os.environ.get(
-    'CLI_PACKAGE_NAME', 'github.com/urfave/cli'
-)
-
-
-def main(sysargs=sys.argv[:]):
-    targets = {
-        'vet': _vet,
-        'test': _test,
-        'gfmrun': _gfmrun,
-        'toc': _toc,
-        'gen': _gen,
-    }
-
-    parser = argparse.ArgumentParser()
-    parser.add_argument(
-        'target', nargs='?', choices=tuple(targets.keys()), default='test'
-    )
-    args = parser.parse_args(sysargs[1:])
-
-    targets[args.target]()
-    return 0
-
-
-def _test():
-    if check_output('go version'.split()).split()[2] < 'go1.2':
-        _run('go test -v .')
-        return
-
-    coverprofiles = []
-    for subpackage in ['', 'altsrc']:
-        coverprofile = 'cli.coverprofile'
-        if subpackage != '':
-            coverprofile = '{}.coverprofile'.format(subpackage)
-
-        coverprofiles.append(coverprofile)
-
-        _run('go test -v'.split() + [
-            '-coverprofile={}'.format(coverprofile),
-            ('{}/{}'.format(PACKAGE_NAME, subpackage)).rstrip('/')
-        ])
-
-    combined_name = _combine_coverprofiles(coverprofiles)
-    _run('go tool cover -func={}'.format(combined_name))
-    os.remove(combined_name)
-
-
-def _gfmrun():
-    go_version = check_output('go version'.split()).split()[2]
-    if go_version < 'go1.3':
-        print('runtests: skip on {}'.format(go_version), file=sys.stderr)
-        return
-    _run(['gfmrun', '-c', str(_gfmrun_count()), '-s', 'README.md'])
-
-
-def _vet():
-    _run('go vet ./...')
-
-
-def _toc():
-    _run('node_modules/.bin/markdown-toc -i README.md')
-    _run('git diff --exit-code')
-
-
-def _gen():
-    go_version = check_output('go version'.split()).split()[2]
-    if go_version < 'go1.5':
-        print('runtests: skip on {}'.format(go_version), file=sys.stderr)
-        return
-
-    _run('go generate ./...')
-    _run('git diff --exit-code')
-
-
-def _run(command):
-    if hasattr(command, 'split'):
-        command = command.split()
-    print('runtests: {}'.format(' '.join(command)), file=sys.stderr)
-    check_call(command)
-
-
-def _gfmrun_count():
-    with open('README.md') as infile:
-        lines = infile.read().splitlines()
-        return len(filter(_is_go_runnable, lines))
-
-
-def _is_go_runnable(line):
-    return line.startswith('package main')
-
-
-def _combine_coverprofiles(coverprofiles):
-    combined = tempfile.NamedTemporaryFile(
-        suffix='.coverprofile', delete=False
-    )
-    combined.write('mode: set\n')
-
-    for coverprofile in coverprofiles:
-        with open(coverprofile, 'r') as infile:
-            for line in infile.readlines():
-                if not line.startswith('mode: '):
-                    combined.write(line)
-
-    combined.flush()
-    name = combined.name
-    combined.close()
-    return name
-
-
-if __name__ == '__main__':
-    sys.exit(main())
diff --git a/vendor/github.com/cpuguy83/go-md2man/v2/LICENSE.md b/vendor/github.com/cpuguy83/go-md2man/v2/LICENSE.md
new file mode 100644
index 0000000..1cade6c
--- /dev/null
+++ b/vendor/github.com/cpuguy83/go-md2man/v2/LICENSE.md
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Brian Goff
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/vendor/github.com/cpuguy83/go-md2man/v2/md2man/md2man.go b/vendor/github.com/cpuguy83/go-md2man/v2/md2man/md2man.go
new file mode 100644
index 0000000..42bf32a
--- /dev/null
+++ b/vendor/github.com/cpuguy83/go-md2man/v2/md2man/md2man.go
@@ -0,0 +1,16 @@
+package md2man
+
+import (
+	"github.com/russross/blackfriday/v2"
+)
+
+// Render converts a markdown document into a roff formatted document.
+func Render(doc []byte) []byte {
+	renderer := NewRoffRenderer()
+
+	return blackfriday.Run(doc,
+		[]blackfriday.Option{
+			blackfriday.WithRenderer(renderer),
+			blackfriday.WithExtensions(renderer.GetExtensions()),
+		}...)
+}
diff --git a/vendor/github.com/cpuguy83/go-md2man/v2/md2man/roff.go b/vendor/github.com/cpuguy83/go-md2man/v2/md2man/roff.go
new file mode 100644
index 0000000..8a290f1
--- /dev/null
+++ b/vendor/github.com/cpuguy83/go-md2man/v2/md2man/roff.go
@@ -0,0 +1,382 @@
+package md2man
+
+import (
+	"bufio"
+	"bytes"
+	"fmt"
+	"io"
+	"os"
+	"strings"
+
+	"github.com/russross/blackfriday/v2"
+)
+
+// roffRenderer implements the blackfriday.Renderer interface for creating
+// roff format (manpages) from markdown text
+type roffRenderer struct {
+	extensions   blackfriday.Extensions
+	listCounters []int
+	firstHeader  bool
+	firstDD      bool
+	listDepth    int
+}
+
+const (
+	titleHeader       = ".TH "
+	topLevelHeader    = "\n\n.SH "
+	secondLevelHdr    = "\n.SH "
+	otherHeader       = "\n.SS "
+	crTag             = "\n"
+	emphTag           = "\\fI"
+	emphCloseTag      = "\\fP"
+	strongTag         = "\\fB"
+	strongCloseTag    = "\\fP"
+	breakTag          = "\n.br\n"
+	paraTag           = "\n.PP\n"
+	hruleTag          = "\n.ti 0\n\\l'\\n(.lu'\n"
+	linkTag           = "\n\\[la]"
+	linkCloseTag      = "\\[ra]"
+	codespanTag       = "\\fB"
+	codespanCloseTag  = "\\fR"
+	codeTag           = "\n.EX\n"
+	codeCloseTag      = ".EE\n" // Do not prepend a newline character since code blocks, by definition, include a newline already (or at least as how blackfriday gives us on).
+	quoteTag          = "\n.PP\n.RS\n"
+	quoteCloseTag     = "\n.RE\n"
+	listTag           = "\n.RS\n"
+	listCloseTag      = "\n.RE\n"
+	dtTag             = "\n.TP\n"
+	dd2Tag            = "\n"
+	tableStart        = "\n.TS\nallbox;\n"
+	tableEnd          = ".TE\n"
+	tableCellStart    = "T{\n"
+	tableCellEnd      = "\nT}\n"
+	tablePreprocessor = `'\" t`
+)
+
+// NewRoffRenderer creates a new blackfriday Renderer for generating roff documents
+// from markdown
+func NewRoffRenderer() *roffRenderer { // nolint: golint
+	var extensions blackfriday.Extensions
+
+	extensions |= blackfriday.NoIntraEmphasis
+	extensions |= blackfriday.Tables
+	extensions |= blackfriday.FencedCode
+	extensions |= blackfriday.SpaceHeadings
+	extensions |= blackfriday.Footnotes
+	extensions |= blackfriday.Titleblock
+	extensions |= blackfriday.DefinitionLists
+	return &roffRenderer{
+		extensions: extensions,
+	}
+}
+
+// GetExtensions returns the list of extensions used by this renderer implementation
+func (r *roffRenderer) GetExtensions() blackfriday.Extensions {
+	return r.extensions
+}
+
+// RenderHeader handles outputting the header at document start
+func (r *roffRenderer) RenderHeader(w io.Writer, ast *blackfriday.Node) {
+	// We need to walk the tree to check if there are any tables.
+	// If there are, we need to enable the roff table preprocessor.
+	ast.Walk(func(node *blackfriday.Node, entering bool) blackfriday.WalkStatus {
+		if node.Type == blackfriday.Table {
+			out(w, tablePreprocessor+"\n")
+			return blackfriday.Terminate
+		}
+		return blackfriday.GoToNext
+	})
+
+	// disable hyphenation
+	out(w, ".nh\n")
+}
+
+// RenderFooter handles outputting the footer at the document end; the roff
+// renderer has no footer information
+func (r *roffRenderer) RenderFooter(w io.Writer, ast *blackfriday.Node) {
+}
+
+// RenderNode is called for each node in a markdown document; based on the node
+// type the equivalent roff output is sent to the writer
+func (r *roffRenderer) RenderNode(w io.Writer, node *blackfriday.Node, entering bool) blackfriday.WalkStatus {
+	walkAction := blackfriday.GoToNext
+
+	switch node.Type {
+	case blackfriday.Text:
+		escapeSpecialChars(w, node.Literal)
+	case blackfriday.Softbreak:
+		out(w, crTag)
+	case blackfriday.Hardbreak:
+		out(w, breakTag)
+	case blackfriday.Emph:
+		if entering {
+			out(w, emphTag)
+		} else {
+			out(w, emphCloseTag)
+		}
+	case blackfriday.Strong:
+		if entering {
+			out(w, strongTag)
+		} else {
+			out(w, strongCloseTag)
+		}
+	case blackfriday.Link:
+		// Don't render the link text for automatic links, because this
+		// will only duplicate the URL in the roff output.
+		// See https://daringfireball.net/projects/markdown/syntax#autolink
+		if !bytes.Equal(node.LinkData.Destination, node.FirstChild.Literal) {
+			out(w, string(node.FirstChild.Literal))
+		}
+		// Hyphens in a link must be escaped to avoid word-wrap in the rendered man page.
+		escapedLink := strings.ReplaceAll(string(node.LinkData.Destination), "-", "\\-")
+		out(w, linkTag+escapedLink+linkCloseTag)
+		walkAction = blackfriday.SkipChildren
+	case blackfriday.Image:
+		// ignore images
+		walkAction = blackfriday.SkipChildren
+	case blackfriday.Code:
+		out(w, codespanTag)
+		escapeSpecialChars(w, node.Literal)
+		out(w, codespanCloseTag)
+	case blackfriday.Document:
+		break
+	case blackfriday.Paragraph:
+		// roff .PP markers break lists
+		if r.listDepth > 0 {
+			return blackfriday.GoToNext
+		}
+		if entering {
+			out(w, paraTag)
+		} else {
+			out(w, crTag)
+		}
+	case blackfriday.BlockQuote:
+		if entering {
+			out(w, quoteTag)
+		} else {
+			out(w, quoteCloseTag)
+		}
+	case blackfriday.Heading:
+		r.handleHeading(w, node, entering)
+	case blackfriday.HorizontalRule:
+		out(w, hruleTag)
+	case blackfriday.List:
+		r.handleList(w, node, entering)
+	case blackfriday.Item:
+		r.handleItem(w, node, entering)
+	case blackfriday.CodeBlock:
+		out(w, codeTag)
+		escapeSpecialChars(w, node.Literal)
+		out(w, codeCloseTag)
+	case blackfriday.Table:
+		r.handleTable(w, node, entering)
+	case blackfriday.TableHead:
+	case blackfriday.TableBody:
+	case blackfriday.TableRow:
+		// no action as cell entries do all the nroff formatting
+		return blackfriday.GoToNext
+	case blackfriday.TableCell:
+		r.handleTableCell(w, node, entering)
+	case blackfriday.HTMLSpan:
+		// ignore other HTML tags
+	case blackfriday.HTMLBlock:
+		if bytes.HasPrefix(node.Literal, []byte("<!--")) {
+			break // ignore comments, no warning
+		}
+		fmt.Fprintln(os.Stderr, "WARNING: go-md2man does not handle node type "+node.Type.String())
+	default:
+		fmt.Fprintln(os.Stderr, "WARNING: go-md2man does not handle node type "+node.Type.String())
+	}
+	return walkAction
+}
+
+func (r *roffRenderer) handleHeading(w io.Writer, node *blackfriday.Node, entering bool) {
+	if entering {
+		switch node.Level {
+		case 1:
+			if !r.firstHeader {
+				out(w, titleHeader)
+				r.firstHeader = true
+				break
+			}
+			out(w, topLevelHeader)
+		case 2:
+			out(w, secondLevelHdr)
+		default:
+			out(w, otherHeader)
+		}
+	}
+}
+
+func (r *roffRenderer) handleList(w io.Writer, node *blackfriday.Node, entering bool) {
+	openTag := listTag
+	closeTag := listCloseTag
+	if node.ListFlags&blackfriday.ListTypeDefinition != 0 {
+		// tags for definition lists handled within Item node
+		openTag = ""
+		closeTag = ""
+	}
+	if entering {
+		r.listDepth++
+		if node.ListFlags&blackfriday.ListTypeOrdered != 0 {
+			r.listCounters = append(r.listCounters, 1)
+		}
+		out(w, openTag)
+	} else {
+		if node.ListFlags&blackfriday.ListTypeOrdered != 0 {
+			r.listCounters = r.listCounters[:len(r.listCounters)-1]
+		}
+		out(w, closeTag)
+		r.listDepth--
+	}
+}
+
+func (r *roffRenderer) handleItem(w io.Writer, node *blackfriday.Node, entering bool) {
+	if entering {
+		if node.ListFlags&blackfriday.ListTypeOrdered != 0 {
+			out(w, fmt.Sprintf(".IP \"%3d.\" 5\n", r.listCounters[len(r.listCounters)-1]))
+			r.listCounters[len(r.listCounters)-1]++
+		} else if node.ListFlags&blackfriday.ListTypeTerm != 0 {
+			// DT (definition term): line just before DD (see below).
+			out(w, dtTag)
+			r.firstDD = true
+		} else if node.ListFlags&blackfriday.ListTypeDefinition != 0 {
+			// DD (definition description): line that starts with ": ".
+			//
+			// We have to distinguish between the first DD and the
+			// subsequent ones, as there should be no vertical
+			// whitespace between the DT and the first DD.
+			if r.firstDD {
+				r.firstDD = false
+			} else {
+				out(w, dd2Tag)
+			}
+		} else {
+			out(w, ".IP \\(bu 2\n")
+		}
+	} else {
+		out(w, "\n")
+	}
+}
+
+func (r *roffRenderer) handleTable(w io.Writer, node *blackfriday.Node, entering bool) {
+	if entering {
+		out(w, tableStart)
+		// call walker to count cells (and rows?) so format section can be produced
+		columns := countColumns(node)
+		out(w, strings.Repeat("l ", columns)+"\n")
+		out(w, strings.Repeat("l ", columns)+".\n")
+	} else {
+		out(w, tableEnd)
+	}
+}
+
+func (r *roffRenderer) handleTableCell(w io.Writer, node *blackfriday.Node, entering bool) {
+	if entering {
+		var start string
+		if node.Prev != nil && node.Prev.Type == blackfriday.TableCell {
+			start = "\t"
+		}
+		if node.IsHeader {
+			start += strongTag
+		} else if nodeLiteralSize(node) > 30 {
+			start += tableCellStart
+		}
+		out(w, start)
+	} else {
+		var end string
+		if node.IsHeader {
+			end = strongCloseTag
+		} else if nodeLiteralSize(node) > 30 {
+			end = tableCellEnd
+		}
+		if node.Next == nil && end != tableCellEnd {
+			// Last cell: need to carriage return if we are at the end of the
+			// header row and content isn't wrapped in a "tablecell"
+			end += crTag
+		}
+		out(w, end)
+	}
+}
+
+func nodeLiteralSize(node *blackfriday.Node) int {
+	total := 0
+	for n := node.FirstChild; n != nil; n = n.FirstChild {
+		total += len(n.Literal)
+	}
+	return total
+}
+
+// because roff format requires knowing the column count before outputting any table
+// data we need to walk a table tree and count the columns
+func countColumns(node *blackfriday.Node) int {
+	var columns int
+
+	node.Walk(func(node *blackfriday.Node, entering bool) blackfriday.WalkStatus {
+		switch node.Type {
+		case blackfriday.TableRow:
+			if !entering {
+				return blackfriday.Terminate
+			}
+		case blackfriday.TableCell:
+			if entering {
+				columns++
+			}
+		default:
+		}
+		return blackfriday.GoToNext
+	})
+	return columns
+}
+
+func out(w io.Writer, output string) {
+	io.WriteString(w, output) // nolint: errcheck
+}
+
+func escapeSpecialChars(w io.Writer, text []byte) {
+	scanner := bufio.NewScanner(bytes.NewReader(text))
+
+	// count the number of lines in the text
+	// we need to know this to avoid adding a newline after the last line
+	n := bytes.Count(text, []byte{'\n'})
+	idx := 0
+
+	for scanner.Scan() {
+		dt := scanner.Bytes()
+		if idx < n {
+			idx++
+			dt = append(dt, '\n')
+		}
+		escapeSpecialCharsLine(w, dt)
+	}
+
+	if err := scanner.Err(); err != nil {
+		panic(err)
+	}
+}
+
+func escapeSpecialCharsLine(w io.Writer, text []byte) {
+	for i := 0; i < len(text); i++ {
+		// escape initial apostrophe or period
+		if len(text) >= 1 && (text[0] == '\'' || text[0] == '.') {
+			out(w, "\\&")
+		}
+
+		// directly copy normal characters
+		org := i
+
+		for i < len(text) && text[i] != '\\' {
+			i++
+		}
+		if i > org {
+			w.Write(text[org:i]) // nolint: errcheck
+		}
+
+		// escape a character
+		if i >= len(text) {
+			break
+		}
+
+		w.Write([]byte{'\\', text[i]}) // nolint: errcheck
+	}
+}
diff --git a/vendor/github.com/gorilla/websocket/client.go b/vendor/github.com/gorilla/websocket/client.go
index 93db8dd..204d1bc 100644
--- a/vendor/github.com/gorilla/websocket/client.go
+++ b/vendor/github.com/gorilla/websocket/client.go
@@ -206,7 +206,18 @@ func (d *Dialer) Dial(urlStr string, requestHeader http.Header) (*Conn, *http.Re
 	if u.Scheme == "wss" {
 		cfg := d.TLSClientConfig
 		if cfg == nil {
-			cfg = &tls.Config{ServerName: hostNoPort}
+			cfg = &tls.Config{
+				ServerName: hostNoPort,
+				MinVersion: tls.VersionTLS12,
+		                CipherSuites: []uint16{
+				    tls.TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA,
+				    tls.TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384,
+			            tls.TLS_RSA_WITH_AES_256_CBC_SHA,
+			            tls.TLS_RSA_WITH_AES_128_CBC_SHA,
+			            tls.TLS_RSA_WITH_AES_128_GCM_SHA256,
+			            tls.TLS_RSA_WITH_AES_256_GCM_SHA384,
+		                },
+			}
 		} else if cfg.ServerName == "" {
 			shallowCopy := *cfg
 			cfg = &shallowCopy
diff --git a/vendor/github.com/kr/pty/types.go b/vendor/github.com/kr/pty/types.go
deleted file mode 100644
index 5aecb6b..0000000
--- a/vendor/github.com/kr/pty/types.go
+++ /dev/null
@@ -1,10 +0,0 @@
-// +build ignore
-
-package pty
-
-import "C"
-
-type (
-	_C_int  C.int
-	_C_uint C.uint
-)
diff --git a/vendor/github.com/kr/pty/types_freebsd.go b/vendor/github.com/kr/pty/types_freebsd.go
deleted file mode 100644
index ce3eb95..0000000
--- a/vendor/github.com/kr/pty/types_freebsd.go
+++ /dev/null
@@ -1,15 +0,0 @@
-// +build ignore
-
-package pty
-
-/*
-#include <sys/param.h>
-#include <sys/filio.h>
-*/
-import "C"
-
-const (
-	_C_SPECNAMELEN = C.SPECNAMELEN /* max length of devicename */
-)
-
-type fiodgnameArg C.struct_fiodgname_arg
diff --git a/vendor/github.com/russross/blackfriday/v2/.gitignore b/vendor/github.com/russross/blackfriday/v2/.gitignore
new file mode 100644
index 0000000..75623dc
--- /dev/null
+++ b/vendor/github.com/russross/blackfriday/v2/.gitignore
@@ -0,0 +1,8 @@
+*.out
+*.swp
+*.8
+*.6
+_obj
+_test*
+markdown
+tags
diff --git a/vendor/github.com/russross/blackfriday/v2/.travis.yml b/vendor/github.com/russross/blackfriday/v2/.travis.yml
new file mode 100644
index 0000000..b0b525a
--- /dev/null
+++ b/vendor/github.com/russross/blackfriday/v2/.travis.yml
@@ -0,0 +1,17 @@
+sudo: false
+language: go
+go:
+  - "1.10.x"
+  - "1.11.x"
+  - tip
+matrix:
+  fast_finish: true
+  allow_failures:
+    - go: tip
+install:
+  - # Do nothing. This is needed to prevent default install action "go get -t -v ./..." from happening here (we want it to happen inside script step).
+script:
+  - go get -t -v ./...
+  - diff -u <(echo -n) <(gofmt -d -s .)
+  - go tool vet .
+  - go test -v ./...
diff --git a/vendor/github.com/russross/blackfriday/v2/LICENSE.txt b/vendor/github.com/russross/blackfriday/v2/LICENSE.txt
new file mode 100644
index 0000000..2885af3
--- /dev/null
+++ b/vendor/github.com/russross/blackfriday/v2/LICENSE.txt
@@ -0,0 +1,29 @@
+Blackfriday is distributed under the Simplified BSD License:
+
+> Copyright © 2011 Russ Ross
+> All rights reserved.
+>
+> Redistribution and use in source and binary forms, with or without
+> modification, are permitted provided that the following conditions
+> are met:
+>
+> 1.  Redistributions of source code must retain the above copyright
+>     notice, this list of conditions and the following disclaimer.
+>
+> 2.  Redistributions in binary form must reproduce the above
+>     copyright notice, this list of conditions and the following
+>     disclaimer in the documentation and/or other materials provided with
+>     the distribution.
+>
+> THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+> "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+> LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+> FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+> COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+> INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+> BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+> LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+> CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+> LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+> ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+> POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/github.com/russross/blackfriday/v2/README.md b/vendor/github.com/russross/blackfriday/v2/README.md
new file mode 100644
index 0000000..d9c08a2
--- /dev/null
+++ b/vendor/github.com/russross/blackfriday/v2/README.md
@@ -0,0 +1,335 @@
+Blackfriday
+[![Build Status][BuildV2SVG]][BuildV2URL]
+[![PkgGoDev][PkgGoDevV2SVG]][PkgGoDevV2URL]
+===========
+
+Blackfriday is a [Markdown][1] processor implemented in [Go][2]. It
+is paranoid about its input (so you can safely feed it user-supplied
+data), it is fast, it supports common extensions (tables, smart
+punctuation substitutions, etc.), and it is safe for all utf-8
+(unicode) input.
+
+HTML output is currently supported, along with Smartypants
+extensions.
+
+It started as a translation from C of [Sundown][3].
+
+
+Installation
+------------
+
+Blackfriday is compatible with modern Go releases in module mode.
+With Go installed:
+
+    go get github.com/russross/blackfriday/v2
+
+will resolve and add the package to the current development module,
+then build and install it. Alternatively, you can achieve the same
+if you import it in a package:
+
+    import "github.com/russross/blackfriday/v2"
+
+and `go get` without parameters.
+
+Legacy GOPATH mode is unsupported.
+
+
+Versions
+--------
+
+Currently maintained and recommended version of Blackfriday is `v2`. It's being
+developed on its own branch: https://github.com/russross/blackfriday/tree/v2 and the
+documentation is available at
+https://pkg.go.dev/github.com/russross/blackfriday/v2.
+
+It is `go get`-able in module mode at `github.com/russross/blackfriday/v2`.
+
+Version 2 offers a number of improvements over v1:
+
+* Cleaned up API
+* A separate call to [`Parse`][4], which produces an abstract syntax tree for
+  the document
+* Latest bug fixes
+* Flexibility to easily add your own rendering extensions
+
+Potential drawbacks:
+
+* Our benchmarks show v2 to be slightly slower than v1. Currently in the
+  ballpark of around 15%.
+* API breakage. If you can't afford modifying your code to adhere to the new API
+  and don't care too much about the new features, v2 is probably not for you.
+* Several bug fixes are trailing behind and still need to be forward-ported to
+  v2. See issue [#348](https://github.com/russross/blackfriday/issues/348) for
+  tracking.
+
+If you are still interested in the legacy `v1`, you can import it from
+`github.com/russross/blackfriday`. Documentation for the legacy v1 can be found
+here: https://pkg.go.dev/github.com/russross/blackfriday.
+
+
+Usage
+-----
+
+For the most sensible markdown processing, it is as simple as getting your input
+into a byte slice and calling:
+
+```go
+output := blackfriday.Run(input)
+```
+
+Your input will be parsed and the output rendered with a set of most popular
+extensions enabled. If you want the most basic feature set, corresponding with
+the bare Markdown specification, use:
+
+```go
+output := blackfriday.Run(input, blackfriday.WithNoExtensions())
+```
+
+### Sanitize untrusted content
+
+Blackfriday itself does nothing to protect against malicious content. If you are
+dealing with user-supplied markdown, we recommend running Blackfriday's output
+through HTML sanitizer such as [Bluemonday][5].
+
+Here's an example of simple usage of Blackfriday together with Bluemonday:
+
+```go
+import (
+    "github.com/microcosm-cc/bluemonday"
+    "github.com/russross/blackfriday/v2"
+)
+
+// ...
+unsafe := blackfriday.Run(input)
+html := bluemonday.UGCPolicy().SanitizeBytes(unsafe)
+```
+
+### Custom options
+
+If you want to customize the set of options, use `blackfriday.WithExtensions`,
+`blackfriday.WithRenderer` and `blackfriday.WithRefOverride`.
+
+### `blackfriday-tool`
+
+You can also check out `blackfriday-tool` for a more complete example
+of how to use it. Download and install it using:
+
+    go get github.com/russross/blackfriday-tool
+
+This is a simple command-line tool that allows you to process a
+markdown file using a standalone program.  You can also browse the
+source directly on github if you are just looking for some example
+code:
+
+* <https://github.com/russross/blackfriday-tool>
+
+Note that if you have not already done so, installing
+`blackfriday-tool` will be sufficient to download and install
+blackfriday in addition to the tool itself. The tool binary will be
+installed in `$GOPATH/bin`.  This is a statically-linked binary that
+can be copied to wherever you need it without worrying about
+dependencies and library versions.
+
+### Sanitized anchor names
+
+Blackfriday includes an algorithm for creating sanitized anchor names
+corresponding to a given input text. This algorithm is used to create
+anchors for headings when `AutoHeadingIDs` extension is enabled. The
+algorithm has a specification, so that other packages can create
+compatible anchor names and links to those anchors.
+
+The specification is located at https://pkg.go.dev/github.com/russross/blackfriday/v2#hdr-Sanitized_Anchor_Names.
+
+[`SanitizedAnchorName`](https://pkg.go.dev/github.com/russross/blackfriday/v2#SanitizedAnchorName) exposes this functionality, and can be used to
+create compatible links to the anchor names generated by blackfriday.
+This algorithm is also implemented in a small standalone package at
+[`github.com/shurcooL/sanitized_anchor_name`](https://pkg.go.dev/github.com/shurcooL/sanitized_anchor_name). It can be useful for clients
+that want a small package and don't need full functionality of blackfriday.
+
+
+Features
+--------
+
+All features of Sundown are supported, including:
+
+*   **Compatibility**. The Markdown v1.0.3 test suite passes with
+    the `--tidy` option.  Without `--tidy`, the differences are
+    mostly in whitespace and entity escaping, where blackfriday is
+    more consistent and cleaner.
+
+*   **Common extensions**, including table support, fenced code
+    blocks, autolinks, strikethroughs, non-strict emphasis, etc.
+
+*   **Safety**. Blackfriday is paranoid when parsing, making it safe
+    to feed untrusted user input without fear of bad things
+    happening. The test suite stress tests this and there are no
+    known inputs that make it crash.  If you find one, please let me
+    know and send me the input that does it.
+
+    NOTE: "safety" in this context means *runtime safety only*. In order to
+    protect yourself against JavaScript injection in untrusted content, see
+    [this example](https://github.com/russross/blackfriday#sanitize-untrusted-content).
+
+*   **Fast processing**. It is fast enough to render on-demand in
+    most web applications without having to cache the output.
+
+*   **Thread safety**. You can run multiple parsers in different
+    goroutines without ill effect. There is no dependence on global
+    shared state.
+
+*   **Minimal dependencies**. Blackfriday only depends on standard
+    library packages in Go. The source code is pretty
+    self-contained, so it is easy to add to any project, including
+    Google App Engine projects.
+
+*   **Standards compliant**. Output successfully validates using the
+    W3C validation tool for HTML 4.01 and XHTML 1.0 Transitional.
+
+
+Extensions
+----------
+
+In addition to the standard markdown syntax, this package
+implements the following extensions:
+
+*   **Intra-word emphasis supression**. The `_` character is
+    commonly used inside words when discussing code, so having
+    markdown interpret it as an emphasis command is usually the
+    wrong thing. Blackfriday lets you treat all emphasis markers as
+    normal characters when they occur inside a word.
+
+*   **Tables**. Tables can be created by drawing them in the input
+    using a simple syntax:
+
+    ```
+    Name    | Age
+    --------|------
+    Bob     | 27
+    Alice   | 23
+    ```
+
+*   **Fenced code blocks**. In addition to the normal 4-space
+    indentation to mark code blocks, you can explicitly mark them
+    and supply a language (to make syntax highlighting simple). Just
+    mark it like this:
+
+        ```go
+        func getTrue() bool {
+            return true
+        }
+        ```
+
+    You can use 3 or more backticks to mark the beginning of the
+    block, and the same number to mark the end of the block.
+
+    To preserve classes of fenced code blocks while using the bluemonday
+    HTML sanitizer, use the following policy:
+
+    ```go
+    p := bluemonday.UGCPolicy()
+    p.AllowAttrs("class").Matching(regexp.MustCompile("^language-[a-zA-Z0-9]+$")).OnElements("code")
+    html := p.SanitizeBytes(unsafe)
+    ```
+
+*   **Definition lists**. A simple definition list is made of a single-line
+    term followed by a colon and the definition for that term.
+
+        Cat
+        : Fluffy animal everyone likes
+
+        Internet
+        : Vector of transmission for pictures of cats
+
+    Terms must be separated from the previous definition by a blank line.
+
+*   **Footnotes**. A marker in the text that will become a superscript number;
+    a footnote definition that will be placed in a list of footnotes at the
+    end of the document. A footnote looks like this:
+
+        This is a footnote.[^1]
+
+        [^1]: the footnote text.
+
+*   **Autolinking**. Blackfriday can find URLs that have not been
+    explicitly marked as links and turn them into links.
+
+*   **Strikethrough**. Use two tildes (`~~`) to mark text that
+    should be crossed out.
+
+*   **Hard line breaks**. With this extension enabled newlines in the input
+    translate into line breaks in the output. This extension is off by default.
+
+*   **Smart quotes**. Smartypants-style punctuation substitution is
+    supported, turning normal double- and single-quote marks into
+    curly quotes, etc.
+
+*   **LaTeX-style dash parsing** is an additional option, where `--`
+    is translated into `&ndash;`, and `---` is translated into
+    `&mdash;`. This differs from most smartypants processors, which
+    turn a single hyphen into an ndash and a double hyphen into an
+    mdash.
+
+*   **Smart fractions**, where anything that looks like a fraction
+    is translated into suitable HTML (instead of just a few special
+    cases like most smartypant processors). For example, `4/5`
+    becomes `<sup>4</sup>&frasl;<sub>5</sub>`, which renders as
+    <sup>4</sup>&frasl;<sub>5</sub>.
+
+
+Other renderers
+---------------
+
+Blackfriday is structured to allow alternative rendering engines. Here
+are a few of note:
+
+*   [github_flavored_markdown](https://pkg.go.dev/github.com/shurcooL/github_flavored_markdown):
+    provides a GitHub Flavored Markdown renderer with fenced code block
+    highlighting, clickable heading anchor links.
+
+    It's not customizable, and its goal is to produce HTML output
+    equivalent to the [GitHub Markdown API endpoint](https://developer.github.com/v3/markdown/#render-a-markdown-document-in-raw-mode),
+    except the rendering is performed locally.
+
+*   [markdownfmt](https://github.com/shurcooL/markdownfmt): like gofmt,
+    but for markdown.
+
+*   [LaTeX output](https://gitlab.com/ambrevar/blackfriday-latex):
+    renders output as LaTeX.
+
+*   [bfchroma](https://github.com/Depado/bfchroma/): provides convenience
+    integration with the [Chroma](https://github.com/alecthomas/chroma) code
+    highlighting library. bfchroma is only compatible with v2 of Blackfriday and
+    provides a drop-in renderer ready to use with Blackfriday, as well as
+    options and means for further customization.
+
+*   [Blackfriday-Confluence](https://github.com/kentaro-m/blackfriday-confluence): provides a [Confluence Wiki Markup](https://confluence.atlassian.com/doc/confluence-wiki-markup-251003035.html) renderer.
+
+*   [Blackfriday-Slack](https://github.com/karriereat/blackfriday-slack): converts markdown to slack message style
+
+
+TODO
+----
+
+*   More unit testing
+*   Improve Unicode support. It does not understand all Unicode
+    rules (about what constitutes a letter, a punctuation symbol,
+    etc.), so it may fail to detect word boundaries correctly in
+    some instances. It is safe on all UTF-8 input.
+
+
+License
+-------
+
+[Blackfriday is distributed under the Simplified BSD License](LICENSE.txt)
+
+
+   [1]: https://daringfireball.net/projects/markdown/ "Markdown"
+   [2]: https://golang.org/ "Go Language"
+   [3]: https://github.com/vmg/sundown "Sundown"
+   [4]: https://pkg.go.dev/github.com/russross/blackfriday/v2#Parse "Parse func"
+   [5]: https://github.com/microcosm-cc/bluemonday "Bluemonday"
+
+   [BuildV2SVG]: https://travis-ci.org/russross/blackfriday.svg?branch=v2
+   [BuildV2URL]: https://travis-ci.org/russross/blackfriday
+   [PkgGoDevV2SVG]: https://pkg.go.dev/badge/github.com/russross/blackfriday/v2
+   [PkgGoDevV2URL]: https://pkg.go.dev/github.com/russross/blackfriday/v2
diff --git a/vendor/github.com/russross/blackfriday/v2/block.go b/vendor/github.com/russross/blackfriday/v2/block.go
new file mode 100644
index 0000000..dcd61e6
--- /dev/null
+++ b/vendor/github.com/russross/blackfriday/v2/block.go
@@ -0,0 +1,1612 @@
+//
+// Blackfriday Markdown Processor
+// Available at http://github.com/russross/blackfriday
+//
+// Copyright © 2011 Russ Ross <russ@russross.com>.
+// Distributed under the Simplified BSD License.
+// See README.md for details.
+//
+
+//
+// Functions to parse block-level elements.
+//
+
+package blackfriday
+
+import (
+	"bytes"
+	"html"
+	"regexp"
+	"strings"
+	"unicode"
+)
+
+const (
+	charEntity = "&(?:#x[a-f0-9]{1,8}|#[0-9]{1,8}|[a-z][a-z0-9]{1,31});"
+	escapable  = "[!\"#$%&'()*+,./:;<=>?@[\\\\\\]^_`{|}~-]"
+)
+
+var (
+	reBackslashOrAmp      = regexp.MustCompile("[\\&]")
+	reEntityOrEscapedChar = regexp.MustCompile("(?i)\\\\" + escapable + "|" + charEntity)
+)
+
+// Parse block-level data.
+// Note: this function and many that it calls assume that
+// the input buffer ends with a newline.
+func (p *Markdown) block(data []byte) {
+	// this is called recursively: enforce a maximum depth
+	if p.nesting >= p.maxNesting {
+		return
+	}
+	p.nesting++
+
+	// parse out one block-level construct at a time
+	for len(data) > 0 {
+		// prefixed heading:
+		//
+		// # Heading 1
+		// ## Heading 2
+		// ...
+		// ###### Heading 6
+		if p.isPrefixHeading(data) {
+			data = data[p.prefixHeading(data):]
+			continue
+		}
+
+		// block of preformatted HTML:
+		//
+		// <div>
+		//     ...
+		// </div>
+		if data[0] == '<' {
+			if i := p.html(data, true); i > 0 {
+				data = data[i:]
+				continue
+			}
+		}
+
+		// title block
+		//
+		// % stuff
+		// % more stuff
+		// % even more stuff
+		if p.extensions&Titleblock != 0 {
+			if data[0] == '%' {
+				if i := p.titleBlock(data, true); i > 0 {
+					data = data[i:]
+					continue
+				}
+			}
+		}
+
+		// blank lines.  note: returns the # of bytes to skip
+		if i := p.isEmpty(data); i > 0 {
+			data = data[i:]
+			continue
+		}
+
+		// indented code block:
+		//
+		//     func max(a, b int) int {
+		//         if a > b {
+		//             return a
+		//         }
+		//         return b
+		//      }
+		if p.codePrefix(data) > 0 {
+			data = data[p.code(data):]
+			continue
+		}
+
+		// fenced code block:
+		//
+		// ``` go
+		// func fact(n int) int {
+		//     if n <= 1 {
+		//         return n
+		//     }
+		//     return n * fact(n-1)
+		// }
+		// ```
+		if p.extensions&FencedCode != 0 {
+			if i := p.fencedCodeBlock(data, true); i > 0 {
+				data = data[i:]
+				continue
+			}
+		}
+
+		// horizontal rule:
+		//
+		// ------
+		// or
+		// ******
+		// or
+		// ______
+		if p.isHRule(data) {
+			p.addBlock(HorizontalRule, nil)
+			var i int
+			for i = 0; i < len(data) && data[i] != '\n'; i++ {
+			}
+			data = data[i:]
+			continue
+		}
+
+		// block quote:
+		//
+		// > A big quote I found somewhere
+		// > on the web
+		if p.quotePrefix(data) > 0 {
+			data = data[p.quote(data):]
+			continue
+		}
+
+		// table:
+		//
+		// Name  | Age | Phone
+		// ------|-----|---------
+		// Bob   | 31  | 555-1234
+		// Alice | 27  | 555-4321
+		if p.extensions&Tables != 0 {
+			if i := p.table(data); i > 0 {
+				data = data[i:]
+				continue
+			}
+		}
+
+		// an itemized/unordered list:
+		//
+		// * Item 1
+		// * Item 2
+		//
+		// also works with + or -
+		if p.uliPrefix(data) > 0 {
+			data = data[p.list(data, 0):]
+			continue
+		}
+
+		// a numbered/ordered list:
+		//
+		// 1. Item 1
+		// 2. Item 2
+		if p.oliPrefix(data) > 0 {
+			data = data[p.list(data, ListTypeOrdered):]
+			continue
+		}
+
+		// definition lists:
+		//
+		// Term 1
+		// :   Definition a
+		// :   Definition b
+		//
+		// Term 2
+		// :   Definition c
+		if p.extensions&DefinitionLists != 0 {
+			if p.dliPrefix(data) > 0 {
+				data = data[p.list(data, ListTypeDefinition):]
+				continue
+			}
+		}
+
+		// anything else must look like a normal paragraph
+		// note: this finds underlined headings, too
+		data = data[p.paragraph(data):]
+	}
+
+	p.nesting--
+}
+
+func (p *Markdown) addBlock(typ NodeType, content []byte) *Node {
+	p.closeUnmatchedBlocks()
+	container := p.addChild(typ, 0)
+	container.content = content
+	return container
+}
+
+func (p *Markdown) isPrefixHeading(data []byte) bool {
+	if data[0] != '#' {
+		return false
+	}
+
+	if p.extensions&SpaceHeadings != 0 {
+		level := 0
+		for level < 6 && level < len(data) && data[level] == '#' {
+			level++
+		}
+		if level == len(data) || data[level] != ' ' {
+			return false
+		}
+	}
+	return true
+}
+
+func (p *Markdown) prefixHeading(data []byte) int {
+	level := 0
+	for level < 6 && level < len(data) && data[level] == '#' {
+		level++
+	}
+	i := skipChar(data, level, ' ')
+	end := skipUntilChar(data, i, '\n')
+	skip := end
+	id := ""
+	if p.extensions&HeadingIDs != 0 {
+		j, k := 0, 0
+		// find start/end of heading id
+		for j = i; j < end-1 && (data[j] != '{' || data[j+1] != '#'); j++ {
+		}
+		for k = j + 1; k < end && data[k] != '}'; k++ {
+		}
+		// extract heading id iff found
+		if j < end && k < end {
+			id = string(data[j+2 : k])
+			end = j
+			skip = k + 1
+			for end > 0 && data[end-1] == ' ' {
+				end--
+			}
+		}
+	}
+	for end > 0 && data[end-1] == '#' {
+		if isBackslashEscaped(data, end-1) {
+			break
+		}
+		end--
+	}
+	for end > 0 && data[end-1] == ' ' {
+		end--
+	}
+	if end > i {
+		if id == "" && p.extensions&AutoHeadingIDs != 0 {
+			id = SanitizedAnchorName(string(data[i:end]))
+		}
+		block := p.addBlock(Heading, data[i:end])
+		block.HeadingID = id
+		block.Level = level
+	}
+	return skip
+}
+
+func (p *Markdown) isUnderlinedHeading(data []byte) int {
+	// test of level 1 heading
+	if data[0] == '=' {
+		i := skipChar(data, 1, '=')
+		i = skipChar(data, i, ' ')
+		if i < len(data) && data[i] == '\n' {
+			return 1
+		}
+		return 0
+	}
+
+	// test of level 2 heading
+	if data[0] == '-' {
+		i := skipChar(data, 1, '-')
+		i = skipChar(data, i, ' ')
+		if i < len(data) && data[i] == '\n' {
+			return 2
+		}
+		return 0
+	}
+
+	return 0
+}
+
+func (p *Markdown) titleBlock(data []byte, doRender bool) int {
+	if data[0] != '%' {
+		return 0
+	}
+	splitData := bytes.Split(data, []byte("\n"))
+	var i int
+	for idx, b := range splitData {
+		if !bytes.HasPrefix(b, []byte("%")) {
+			i = idx // - 1
+			break
+		}
+	}
+
+	data = bytes.Join(splitData[0:i], []byte("\n"))
+	consumed := len(data)
+	data = bytes.TrimPrefix(data, []byte("% "))
+	data = bytes.Replace(data, []byte("\n% "), []byte("\n"), -1)
+	block := p.addBlock(Heading, data)
+	block.Level = 1
+	block.IsTitleblock = true
+
+	return consumed
+}
+
+func (p *Markdown) html(data []byte, doRender bool) int {
+	var i, j int
+
+	// identify the opening tag
+	if data[0] != '<' {
+		return 0
+	}
+	curtag, tagfound := p.htmlFindTag(data[1:])
+
+	// handle special cases
+	if !tagfound {
+		// check for an HTML comment
+		if size := p.htmlComment(data, doRender); size > 0 {
+			return size
+		}
+
+		// check for an <hr> tag
+		if size := p.htmlHr(data, doRender); size > 0 {
+			return size
+		}
+
+		// no special case recognized
+		return 0
+	}
+
+	// look for an unindented matching closing tag
+	// followed by a blank line
+	found := false
+	/*
+		closetag := []byte("\n</" + curtag + ">")
+		j = len(curtag) + 1
+		for !found {
+			// scan for a closing tag at the beginning of a line
+			if skip := bytes.Index(data[j:], closetag); skip >= 0 {
+				j += skip + len(closetag)
+			} else {
+				break
+			}
+
+			// see if it is the only thing on the line
+			if skip := p.isEmpty(data[j:]); skip > 0 {
+				// see if it is followed by a blank line/eof
+				j += skip
+				if j >= len(data) {
+					found = true
+					i = j
+				} else {
+					if skip := p.isEmpty(data[j:]); skip > 0 {
+						j += skip
+						found = true
+						i = j
+					}
+				}
+			}
+		}
+	*/
+
+	// if not found, try a second pass looking for indented match
+	// but not if tag is "ins" or "del" (following original Markdown.pl)
+	if !found && curtag != "ins" && curtag != "del" {
+		i = 1
+		for i < len(data) {
+			i++
+			for i < len(data) && !(data[i-1] == '<' && data[i] == '/') {
+				i++
+			}
+
+			if i+2+len(curtag) >= len(data) {
+				break
+			}
+
+			j = p.htmlFindEnd(curtag, data[i-1:])
+
+			if j > 0 {
+				i += j - 1
+				found = true
+				break
+			}
+		}
+	}
+
+	if !found {
+		return 0
+	}
+
+	// the end of the block has been found
+	if doRender {
+		// trim newlines
+		end := i
+		for end > 0 && data[end-1] == '\n' {
+			end--
+		}
+		finalizeHTMLBlock(p.addBlock(HTMLBlock, data[:end]))
+	}
+
+	return i
+}
+
+func finalizeHTMLBlock(block *Node) {
+	block.Literal = block.content
+	block.content = nil
+}
+
+// HTML comment, lax form
+func (p *Markdown) htmlComment(data []byte, doRender bool) int {
+	i := p.inlineHTMLComment(data)
+	// needs to end with a blank line
+	if j := p.isEmpty(data[i:]); j > 0 {
+		size := i + j
+		if doRender {
+			// trim trailing newlines
+			end := size
+			for end > 0 && data[end-1] == '\n' {
+				end--
+			}
+			block := p.addBlock(HTMLBlock, data[:end])
+			finalizeHTMLBlock(block)
+		}
+		return size
+	}
+	return 0
+}
+
+// HR, which is the only self-closing block tag considered
+func (p *Markdown) htmlHr(data []byte, doRender bool) int {
+	if len(data) < 4 {
+		return 0
+	}
+	if data[0] != '<' || (data[1] != 'h' && data[1] != 'H') || (data[2] != 'r' && data[2] != 'R') {
+		return 0
+	}
+	if data[3] != ' ' && data[3] != '/' && data[3] != '>' {
+		// not an <hr> tag after all; at least not a valid one
+		return 0
+	}
+	i := 3
+	for i < len(data) && data[i] != '>' && data[i] != '\n' {
+		i++
+	}
+	if i < len(data) && data[i] == '>' {
+		i++
+		if j := p.isEmpty(data[i:]); j > 0 {
+			size := i + j
+			if doRender {
+				// trim newlines
+				end := size
+				for end > 0 && data[end-1] == '\n' {
+					end--
+				}
+				finalizeHTMLBlock(p.addBlock(HTMLBlock, data[:end]))
+			}
+			return size
+		}
+	}
+	return 0
+}
+
+func (p *Markdown) htmlFindTag(data []byte) (string, bool) {
+	i := 0
+	for i < len(data) && isalnum(data[i]) {
+		i++
+	}
+	key := string(data[:i])
+	if _, ok := blockTags[key]; ok {
+		return key, true
+	}
+	return "", false
+}
+
+func (p *Markdown) htmlFindEnd(tag string, data []byte) int {
+	// assume data[0] == '<' && data[1] == '/' already tested
+	if tag == "hr" {
+		return 2
+	}
+	// check if tag is a match
+	closetag := []byte("</" + tag + ">")
+	if !bytes.HasPrefix(data, closetag) {
+		return 0
+	}
+	i := len(closetag)
+
+	// check that the rest of the line is blank
+	skip := 0
+	if skip = p.isEmpty(data[i:]); skip == 0 {
+		return 0
+	}
+	i += skip
+	skip = 0
+
+	if i >= len(data) {
+		return i
+	}
+
+	if p.extensions&LaxHTMLBlocks != 0 {
+		return i
+	}
+	if skip = p.isEmpty(data[i:]); skip == 0 {
+		// following line must be blank
+		return 0
+	}
+
+	return i + skip
+}
+
+func (*Markdown) isEmpty(data []byte) int {
+	// it is okay to call isEmpty on an empty buffer
+	if len(data) == 0 {
+		return 0
+	}
+
+	var i int
+	for i = 0; i < len(data) && data[i] != '\n'; i++ {
+		if data[i] != ' ' && data[i] != '\t' {
+			return 0
+		}
+	}
+	if i < len(data) && data[i] == '\n' {
+		i++
+	}
+	return i
+}
+
+func (*Markdown) isHRule(data []byte) bool {
+	i := 0
+
+	// skip up to three spaces
+	for i < 3 && data[i] == ' ' {
+		i++
+	}
+
+	// look at the hrule char
+	if data[i] != '*' && data[i] != '-' && data[i] != '_' {
+		return false
+	}
+	c := data[i]
+
+	// the whole line must be the char or whitespace
+	n := 0
+	for i < len(data) && data[i] != '\n' {
+		switch {
+		case data[i] == c:
+			n++
+		case data[i] != ' ':
+			return false
+		}
+		i++
+	}
+
+	return n >= 3
+}
+
+// isFenceLine checks if there's a fence line (e.g., ``` or ``` go) at the beginning of data,
+// and returns the end index if so, or 0 otherwise. It also returns the marker found.
+// If info is not nil, it gets set to the syntax specified in the fence line.
+func isFenceLine(data []byte, info *string, oldmarker string) (end int, marker string) {
+	i, size := 0, 0
+
+	// skip up to three spaces
+	for i < len(data) && i < 3 && data[i] == ' ' {
+		i++
+	}
+
+	// check for the marker characters: ~ or `
+	if i >= len(data) {
+		return 0, ""
+	}
+	if data[i] != '~' && data[i] != '`' {
+		return 0, ""
+	}
+
+	c := data[i]
+
+	// the whole line must be the same char or whitespace
+	for i < len(data) && data[i] == c {
+		size++
+		i++
+	}
+
+	// the marker char must occur at least 3 times
+	if size < 3 {
+		return 0, ""
+	}
+	marker = string(data[i-size : i])
+
+	// if this is the end marker, it must match the beginning marker
+	if oldmarker != "" && marker != oldmarker {
+		return 0, ""
+	}
+
+	// TODO(shurcooL): It's probably a good idea to simplify the 2 code paths here
+	// into one, always get the info string, and discard it if the caller doesn't care.
+	if info != nil {
+		infoLength := 0
+		i = skipChar(data, i, ' ')
+
+		if i >= len(data) {
+			if i == len(data) {
+				return i, marker
+			}
+			return 0, ""
+		}
+
+		infoStart := i
+
+		if data[i] == '{' {
+			i++
+			infoStart++
+
+			for i < len(data) && data[i] != '}' && data[i] != '\n' {
+				infoLength++
+				i++
+			}
+
+			if i >= len(data) || data[i] != '}' {
+				return 0, ""
+			}
+
+			// strip all whitespace at the beginning and the end
+			// of the {} block
+			for infoLength > 0 && isspace(data[infoStart]) {
+				infoStart++
+				infoLength--
+			}
+
+			for infoLength > 0 && isspace(data[infoStart+infoLength-1]) {
+				infoLength--
+			}
+			i++
+			i = skipChar(data, i, ' ')
+		} else {
+			for i < len(data) && !isverticalspace(data[i]) {
+				infoLength++
+				i++
+			}
+		}
+
+		*info = strings.TrimSpace(string(data[infoStart : infoStart+infoLength]))
+	}
+
+	if i == len(data) {
+		return i, marker
+	}
+	if i > len(data) || data[i] != '\n' {
+		return 0, ""
+	}
+	return i + 1, marker // Take newline into account.
+}
+
+// fencedCodeBlock returns the end index if data contains a fenced code block at the beginning,
+// or 0 otherwise. It writes to out if doRender is true, otherwise it has no side effects.
+// If doRender is true, a final newline is mandatory to recognize the fenced code block.
+func (p *Markdown) fencedCodeBlock(data []byte, doRender bool) int {
+	var info string
+	beg, marker := isFenceLine(data, &info, "")
+	if beg == 0 || beg >= len(data) {
+		return 0
+	}
+	fenceLength := beg - 1
+
+	var work bytes.Buffer
+	work.Write([]byte(info))
+	work.WriteByte('\n')
+
+	for {
+		// safe to assume beg < len(data)
+
+		// check for the end of the code block
+		fenceEnd, _ := isFenceLine(data[beg:], nil, marker)
+		if fenceEnd != 0 {
+			beg += fenceEnd
+			break
+		}
+
+		// copy the current line
+		end := skipUntilChar(data, beg, '\n') + 1
+
+		// did we reach the end of the buffer without a closing marker?
+		if end >= len(data) {
+			return 0
+		}
+
+		// verbatim copy to the working buffer
+		if doRender {
+			work.Write(data[beg:end])
+		}
+		beg = end
+	}
+
+	if doRender {
+		block := p.addBlock(CodeBlock, work.Bytes()) // TODO: get rid of temp buffer
+		block.IsFenced = true
+		block.FenceLength = fenceLength
+		finalizeCodeBlock(block)
+	}
+
+	return beg
+}
+
+func unescapeChar(str []byte) []byte {
+	if str[0] == '\\' {
+		return []byte{str[1]}
+	}
+	return []byte(html.UnescapeString(string(str)))
+}
+
+func unescapeString(str []byte) []byte {
+	if reBackslashOrAmp.Match(str) {
+		return reEntityOrEscapedChar.ReplaceAllFunc(str, unescapeChar)
+	}
+	return str
+}
+
+func finalizeCodeBlock(block *Node) {
+	if block.IsFenced {
+		newlinePos := bytes.IndexByte(block.content, '\n')
+		firstLine := block.content[:newlinePos]
+		rest := block.content[newlinePos+1:]
+		block.Info = unescapeString(bytes.Trim(firstLine, "\n"))
+		block.Literal = rest
+	} else {
+		block.Literal = block.content
+	}
+	block.content = nil
+}
+
+func (p *Markdown) table(data []byte) int {
+	table := p.addBlock(Table, nil)
+	i, columns := p.tableHeader(data)
+	if i == 0 {
+		p.tip = table.Parent
+		table.Unlink()
+		return 0
+	}
+
+	p.addBlock(TableBody, nil)
+
+	for i < len(data) {
+		pipes, rowStart := 0, i
+		for ; i < len(data) && data[i] != '\n'; i++ {
+			if data[i] == '|' {
+				pipes++
+			}
+		}
+
+		if pipes == 0 {
+			i = rowStart
+			break
+		}
+
+		// include the newline in data sent to tableRow
+		if i < len(data) && data[i] == '\n' {
+			i++
+		}
+		p.tableRow(data[rowStart:i], columns, false)
+	}
+
+	return i
+}
+
+// check if the specified position is preceded by an odd number of backslashes
+func isBackslashEscaped(data []byte, i int) bool {
+	backslashes := 0
+	for i-backslashes-1 >= 0 && data[i-backslashes-1] == '\\' {
+		backslashes++
+	}
+	return backslashes&1 == 1
+}
+
+func (p *Markdown) tableHeader(data []byte) (size int, columns []CellAlignFlags) {
+	i := 0
+	colCount := 1
+	for i = 0; i < len(data) && data[i] != '\n'; i++ {
+		if data[i] == '|' && !isBackslashEscaped(data, i) {
+			colCount++
+		}
+	}
+
+	// doesn't look like a table header
+	if colCount == 1 {
+		return
+	}
+
+	// include the newline in the data sent to tableRow
+	j := i
+	if j < len(data) && data[j] == '\n' {
+		j++
+	}
+	header := data[:j]
+
+	// column count ignores pipes at beginning or end of line
+	if data[0] == '|' {
+		colCount--
+	}
+	if i > 2 && data[i-1] == '|' && !isBackslashEscaped(data, i-1) {
+		colCount--
+	}
+
+	columns = make([]CellAlignFlags, colCount)
+
+	// move on to the header underline
+	i++
+	if i >= len(data) {
+		return
+	}
+
+	if data[i] == '|' && !isBackslashEscaped(data, i) {
+		i++
+	}
+	i = skipChar(data, i, ' ')
+
+	// each column header is of form: / *:?-+:? *|/ with # dashes + # colons >= 3
+	// and trailing | optional on last column
+	col := 0
+	for i < len(data) && data[i] != '\n' {
+		dashes := 0
+
+		if data[i] == ':' {
+			i++
+			columns[col] |= TableAlignmentLeft
+			dashes++
+		}
+		for i < len(data) && data[i] == '-' {
+			i++
+			dashes++
+		}
+		if i < len(data) && data[i] == ':' {
+			i++
+			columns[col] |= TableAlignmentRight
+			dashes++
+		}
+		for i < len(data) && data[i] == ' ' {
+			i++
+		}
+		if i == len(data) {
+			return
+		}
+		// end of column test is messy
+		switch {
+		case dashes < 3:
+			// not a valid column
+			return
+
+		case data[i] == '|' && !isBackslashEscaped(data, i):
+			// marker found, now skip past trailing whitespace
+			col++
+			i++
+			for i < len(data) && data[i] == ' ' {
+				i++
+			}
+
+			// trailing junk found after last column
+			if col >= colCount && i < len(data) && data[i] != '\n' {
+				return
+			}
+
+		case (data[i] != '|' || isBackslashEscaped(data, i)) && col+1 < colCount:
+			// something else found where marker was required
+			return
+
+		case data[i] == '\n':
+			// marker is optional for the last column
+			col++
+
+		default:
+			// trailing junk found after last column
+			return
+		}
+	}
+	if col != colCount {
+		return
+	}
+
+	p.addBlock(TableHead, nil)
+	p.tableRow(header, columns, true)
+	size = i
+	if size < len(data) && data[size] == '\n' {
+		size++
+	}
+	return
+}
+
+func (p *Markdown) tableRow(data []byte, columns []CellAlignFlags, header bool) {
+	p.addBlock(TableRow, nil)
+	i, col := 0, 0
+
+	if data[i] == '|' && !isBackslashEscaped(data, i) {
+		i++
+	}
+
+	for col = 0; col < len(columns) && i < len(data); col++ {
+		for i < len(data) && data[i] == ' ' {
+			i++
+		}
+
+		cellStart := i
+
+		for i < len(data) && (data[i] != '|' || isBackslashEscaped(data, i)) && data[i] != '\n' {
+			i++
+		}
+
+		cellEnd := i
+
+		// skip the end-of-cell marker, possibly taking us past end of buffer
+		i++
+
+		for cellEnd > cellStart && cellEnd-1 < len(data) && data[cellEnd-1] == ' ' {
+			cellEnd--
+		}
+
+		cell := p.addBlock(TableCell, data[cellStart:cellEnd])
+		cell.IsHeader = header
+		cell.Align = columns[col]
+	}
+
+	// pad it out with empty columns to get the right number
+	for ; col < len(columns); col++ {
+		cell := p.addBlock(TableCell, nil)
+		cell.IsHeader = header
+		cell.Align = columns[col]
+	}
+
+	// silently ignore rows with too many cells
+}
+
+// returns blockquote prefix length
+func (p *Markdown) quotePrefix(data []byte) int {
+	i := 0
+	for i < 3 && i < len(data) && data[i] == ' ' {
+		i++
+	}
+	if i < len(data) && data[i] == '>' {
+		if i+1 < len(data) && data[i+1] == ' ' {
+			return i + 2
+		}
+		return i + 1
+	}
+	return 0
+}
+
+// blockquote ends with at least one blank line
+// followed by something without a blockquote prefix
+func (p *Markdown) terminateBlockquote(data []byte, beg, end int) bool {
+	if p.isEmpty(data[beg:]) <= 0 {
+		return false
+	}
+	if end >= len(data) {
+		return true
+	}
+	return p.quotePrefix(data[end:]) == 0 && p.isEmpty(data[end:]) == 0
+}
+
+// parse a blockquote fragment
+func (p *Markdown) quote(data []byte) int {
+	block := p.addBlock(BlockQuote, nil)
+	var raw bytes.Buffer
+	beg, end := 0, 0
+	for beg < len(data) {
+		end = beg
+		// Step over whole lines, collecting them. While doing that, check for
+		// fenced code and if one's found, incorporate it altogether,
+		// irregardless of any contents inside it
+		for end < len(data) && data[end] != '\n' {
+			if p.extensions&FencedCode != 0 {
+				if i := p.fencedCodeBlock(data[end:], false); i > 0 {
+					// -1 to compensate for the extra end++ after the loop:
+					end += i - 1
+					break
+				}
+			}
+			end++
+		}
+		if end < len(data) && data[end] == '\n' {
+			end++
+		}
+		if pre := p.quotePrefix(data[beg:]); pre > 0 {
+			// skip the prefix
+			beg += pre
+		} else if p.terminateBlockquote(data, beg, end) {
+			break
+		}
+		// this line is part of the blockquote
+		raw.Write(data[beg:end])
+		beg = end
+	}
+	p.block(raw.Bytes())
+	p.finalize(block)
+	return end
+}
+
+// returns prefix length for block code
+func (p *Markdown) codePrefix(data []byte) int {
+	if len(data) >= 1 && data[0] == '\t' {
+		return 1
+	}
+	if len(data) >= 4 && data[0] == ' ' && data[1] == ' ' && data[2] == ' ' && data[3] == ' ' {
+		return 4
+	}
+	return 0
+}
+
+func (p *Markdown) code(data []byte) int {
+	var work bytes.Buffer
+
+	i := 0
+	for i < len(data) {
+		beg := i
+		for i < len(data) && data[i] != '\n' {
+			i++
+		}
+		if i < len(data) && data[i] == '\n' {
+			i++
+		}
+
+		blankline := p.isEmpty(data[beg:i]) > 0
+		if pre := p.codePrefix(data[beg:i]); pre > 0 {
+			beg += pre
+		} else if !blankline {
+			// non-empty, non-prefixed line breaks the pre
+			i = beg
+			break
+		}
+
+		// verbatim copy to the working buffer
+		if blankline {
+			work.WriteByte('\n')
+		} else {
+			work.Write(data[beg:i])
+		}
+	}
+
+	// trim all the \n off the end of work
+	workbytes := work.Bytes()
+	eol := len(workbytes)
+	for eol > 0 && workbytes[eol-1] == '\n' {
+		eol--
+	}
+	if eol != len(workbytes) {
+		work.Truncate(eol)
+	}
+
+	work.WriteByte('\n')
+
+	block := p.addBlock(CodeBlock, work.Bytes()) // TODO: get rid of temp buffer
+	block.IsFenced = false
+	finalizeCodeBlock(block)
+
+	return i
+}
+
+// returns unordered list item prefix
+func (p *Markdown) uliPrefix(data []byte) int {
+	i := 0
+	// start with up to 3 spaces
+	for i < len(data) && i < 3 && data[i] == ' ' {
+		i++
+	}
+	if i >= len(data)-1 {
+		return 0
+	}
+	// need one of {'*', '+', '-'} followed by a space or a tab
+	if (data[i] != '*' && data[i] != '+' && data[i] != '-') ||
+		(data[i+1] != ' ' && data[i+1] != '\t') {
+		return 0
+	}
+	return i + 2
+}
+
+// returns ordered list item prefix
+func (p *Markdown) oliPrefix(data []byte) int {
+	i := 0
+
+	// start with up to 3 spaces
+	for i < 3 && i < len(data) && data[i] == ' ' {
+		i++
+	}
+
+	// count the digits
+	start := i
+	for i < len(data) && data[i] >= '0' && data[i] <= '9' {
+		i++
+	}
+	if start == i || i >= len(data)-1 {
+		return 0
+	}
+
+	// we need >= 1 digits followed by a dot and a space or a tab
+	if data[i] != '.' || !(data[i+1] == ' ' || data[i+1] == '\t') {
+		return 0
+	}
+	return i + 2
+}
+
+// returns definition list item prefix
+func (p *Markdown) dliPrefix(data []byte) int {
+	if len(data) < 2 {
+		return 0
+	}
+	i := 0
+	// need a ':' followed by a space or a tab
+	if data[i] != ':' || !(data[i+1] == ' ' || data[i+1] == '\t') {
+		return 0
+	}
+	for i < len(data) && data[i] == ' ' {
+		i++
+	}
+	return i + 2
+}
+
+// parse ordered or unordered list block
+func (p *Markdown) list(data []byte, flags ListType) int {
+	i := 0
+	flags |= ListItemBeginningOfList
+	block := p.addBlock(List, nil)
+	block.ListFlags = flags
+	block.Tight = true
+
+	for i < len(data) {
+		skip := p.listItem(data[i:], &flags)
+		if flags&ListItemContainsBlock != 0 {
+			block.ListData.Tight = false
+		}
+		i += skip
+		if skip == 0 || flags&ListItemEndOfList != 0 {
+			break
+		}
+		flags &= ^ListItemBeginningOfList
+	}
+
+	above := block.Parent
+	finalizeList(block)
+	p.tip = above
+	return i
+}
+
+// Returns true if the list item is not the same type as its parent list
+func (p *Markdown) listTypeChanged(data []byte, flags *ListType) bool {
+	if p.dliPrefix(data) > 0 && *flags&ListTypeDefinition == 0 {
+		return true
+	} else if p.oliPrefix(data) > 0 && *flags&ListTypeOrdered == 0 {
+		return true
+	} else if p.uliPrefix(data) > 0 && (*flags&ListTypeOrdered != 0 || *flags&ListTypeDefinition != 0) {
+		return true
+	}
+	return false
+}
+
+// Returns true if block ends with a blank line, descending if needed
+// into lists and sublists.
+func endsWithBlankLine(block *Node) bool {
+	// TODO: figure this out. Always false now.
+	for block != nil {
+		//if block.lastLineBlank {
+		//return true
+		//}
+		t := block.Type
+		if t == List || t == Item {
+			block = block.LastChild
+		} else {
+			break
+		}
+	}
+	return false
+}
+
+func finalizeList(block *Node) {
+	block.open = false
+	item := block.FirstChild
+	for item != nil {
+		// check for non-final list item ending with blank line:
+		if endsWithBlankLine(item) && item.Next != nil {
+			block.ListData.Tight = false
+			break
+		}
+		// recurse into children of list item, to see if there are spaces
+		// between any of them:
+		subItem := item.FirstChild
+		for subItem != nil {
+			if endsWithBlankLine(subItem) && (item.Next != nil || subItem.Next != nil) {
+				block.ListData.Tight = false
+				break
+			}
+			subItem = subItem.Next
+		}
+		item = item.Next
+	}
+}
+
+// Parse a single list item.
+// Assumes initial prefix is already removed if this is a sublist.
+func (p *Markdown) listItem(data []byte, flags *ListType) int {
+	// keep track of the indentation of the first line
+	itemIndent := 0
+	if data[0] == '\t' {
+		itemIndent += 4
+	} else {
+		for itemIndent < 3 && data[itemIndent] == ' ' {
+			itemIndent++
+		}
+	}
+
+	var bulletChar byte = '*'
+	i := p.uliPrefix(data)
+	if i == 0 {
+		i = p.oliPrefix(data)
+	} else {
+		bulletChar = data[i-2]
+	}
+	if i == 0 {
+		i = p.dliPrefix(data)
+		// reset definition term flag
+		if i > 0 {
+			*flags &= ^ListTypeTerm
+		}
+	}
+	if i == 0 {
+		// if in definition list, set term flag and continue
+		if *flags&ListTypeDefinition != 0 {
+			*flags |= ListTypeTerm
+		} else {
+			return 0
+		}
+	}
+
+	// skip leading whitespace on first line
+	for i < len(data) && data[i] == ' ' {
+		i++
+	}
+
+	// find the end of the line
+	line := i
+	for i > 0 && i < len(data) && data[i-1] != '\n' {
+		i++
+	}
+
+	// get working buffer
+	var raw bytes.Buffer
+
+	// put the first line into the working buffer
+	raw.Write(data[line:i])
+	line = i
+
+	// process the following lines
+	containsBlankLine := false
+	sublist := 0
+	codeBlockMarker := ""
+
+gatherlines:
+	for line < len(data) {
+		i++
+
+		// find the end of this line
+		for i < len(data) && data[i-1] != '\n' {
+			i++
+		}
+
+		// if it is an empty line, guess that it is part of this item
+		// and move on to the next line
+		if p.isEmpty(data[line:i]) > 0 {
+			containsBlankLine = true
+			line = i
+			continue
+		}
+
+		// calculate the indentation
+		indent := 0
+		indentIndex := 0
+		if data[line] == '\t' {
+			indentIndex++
+			indent += 4
+		} else {
+			for indent < 4 && line+indent < i && data[line+indent] == ' ' {
+				indent++
+				indentIndex++
+			}
+		}
+
+		chunk := data[line+indentIndex : i]
+
+		if p.extensions&FencedCode != 0 {
+			// determine if in or out of codeblock
+			// if in codeblock, ignore normal list processing
+			_, marker := isFenceLine(chunk, nil, codeBlockMarker)
+			if marker != "" {
+				if codeBlockMarker == "" {
+					// start of codeblock
+					codeBlockMarker = marker
+				} else {
+					// end of codeblock.
+					codeBlockMarker = ""
+				}
+			}
+			// we are in a codeblock, write line, and continue
+			if codeBlockMarker != "" || marker != "" {
+				raw.Write(data[line+indentIndex : i])
+				line = i
+				continue gatherlines
+			}
+		}
+
+		// evaluate how this line fits in
+		switch {
+		// is this a nested list item?
+		case (p.uliPrefix(chunk) > 0 && !p.isHRule(chunk)) ||
+			p.oliPrefix(chunk) > 0 ||
+			p.dliPrefix(chunk) > 0:
+
+			// to be a nested list, it must be indented more
+			// if not, it is either a different kind of list
+			// or the next item in the same list
+			if indent <= itemIndent {
+				if p.listTypeChanged(chunk, flags) {
+					*flags |= ListItemEndOfList
+				} else if containsBlankLine {
+					*flags |= ListItemContainsBlock
+				}
+
+				break gatherlines
+			}
+
+			if containsBlankLine {
+				*flags |= ListItemContainsBlock
+			}
+
+			// is this the first item in the nested list?
+			if sublist == 0 {
+				sublist = raw.Len()
+			}
+
+		// is this a nested prefix heading?
+		case p.isPrefixHeading(chunk):
+			// if the heading is not indented, it is not nested in the list
+			// and thus ends the list
+			if containsBlankLine && indent < 4 {
+				*flags |= ListItemEndOfList
+				break gatherlines
+			}
+			*flags |= ListItemContainsBlock
+
+		// anything following an empty line is only part
+		// of this item if it is indented 4 spaces
+		// (regardless of the indentation of the beginning of the item)
+		case containsBlankLine && indent < 4:
+			if *flags&ListTypeDefinition != 0 && i < len(data)-1 {
+				// is the next item still a part of this list?
+				next := i
+				for next < len(data) && data[next] != '\n' {
+					next++
+				}
+				for next < len(data)-1 && data[next] == '\n' {
+					next++
+				}
+				if i < len(data)-1 && data[i] != ':' && data[next] != ':' {
+					*flags |= ListItemEndOfList
+				}
+			} else {
+				*flags |= ListItemEndOfList
+			}
+			break gatherlines
+
+		// a blank line means this should be parsed as a block
+		case containsBlankLine:
+			raw.WriteByte('\n')
+			*flags |= ListItemContainsBlock
+		}
+
+		// if this line was preceded by one or more blanks,
+		// re-introduce the blank into the buffer
+		if containsBlankLine {
+			containsBlankLine = false
+			raw.WriteByte('\n')
+		}
+
+		// add the line into the working buffer without prefix
+		raw.Write(data[line+indentIndex : i])
+
+		line = i
+	}
+
+	rawBytes := raw.Bytes()
+
+	block := p.addBlock(Item, nil)
+	block.ListFlags = *flags
+	block.Tight = false
+	block.BulletChar = bulletChar
+	block.Delimiter = '.' // Only '.' is possible in Markdown, but ')' will also be possible in CommonMark
+
+	// render the contents of the list item
+	if *flags&ListItemContainsBlock != 0 && *flags&ListTypeTerm == 0 {
+		// intermediate render of block item, except for definition term
+		if sublist > 0 {
+			p.block(rawBytes[:sublist])
+			p.block(rawBytes[sublist:])
+		} else {
+			p.block(rawBytes)
+		}
+	} else {
+		// intermediate render of inline item
+		if sublist > 0 {
+			child := p.addChild(Paragraph, 0)
+			child.content = rawBytes[:sublist]
+			p.block(rawBytes[sublist:])
+		} else {
+			child := p.addChild(Paragraph, 0)
+			child.content = rawBytes
+		}
+	}
+	return line
+}
+
+// render a single paragraph that has already been parsed out
+func (p *Markdown) renderParagraph(data []byte) {
+	if len(data) == 0 {
+		return
+	}
+
+	// trim leading spaces
+	beg := 0
+	for data[beg] == ' ' {
+		beg++
+	}
+
+	end := len(data)
+	// trim trailing newline
+	if data[len(data)-1] == '\n' {
+		end--
+	}
+
+	// trim trailing spaces
+	for end > beg && data[end-1] == ' ' {
+		end--
+	}
+
+	p.addBlock(Paragraph, data[beg:end])
+}
+
+func (p *Markdown) paragraph(data []byte) int {
+	// prev: index of 1st char of previous line
+	// line: index of 1st char of current line
+	// i: index of cursor/end of current line
+	var prev, line, i int
+	tabSize := TabSizeDefault
+	if p.extensions&TabSizeEight != 0 {
+		tabSize = TabSizeDouble
+	}
+	// keep going until we find something to mark the end of the paragraph
+	for i < len(data) {
+		// mark the beginning of the current line
+		prev = line
+		current := data[i:]
+		line = i
+
+		// did we find a reference or a footnote? If so, end a paragraph
+		// preceding it and report that we have consumed up to the end of that
+		// reference:
+		if refEnd := isReference(p, current, tabSize); refEnd > 0 {
+			p.renderParagraph(data[:i])
+			return i + refEnd
+		}
+
+		// did we find a blank line marking the end of the paragraph?
+		if n := p.isEmpty(current); n > 0 {
+			// did this blank line followed by a definition list item?
+			if p.extensions&DefinitionLists != 0 {
+				if i < len(data)-1 && data[i+1] == ':' {
+					return p.list(data[prev:], ListTypeDefinition)
+				}
+			}
+
+			p.renderParagraph(data[:i])
+			return i + n
+		}
+
+		// an underline under some text marks a heading, so our paragraph ended on prev line
+		if i > 0 {
+			if level := p.isUnderlinedHeading(current); level > 0 {
+				// render the paragraph
+				p.renderParagraph(data[:prev])
+
+				// ignore leading and trailing whitespace
+				eol := i - 1
+				for prev < eol && data[prev] == ' ' {
+					prev++
+				}
+				for eol > prev && data[eol-1] == ' ' {
+					eol--
+				}
+
+				id := ""
+				if p.extensions&AutoHeadingIDs != 0 {
+					id = SanitizedAnchorName(string(data[prev:eol]))
+				}
+
+				block := p.addBlock(Heading, data[prev:eol])
+				block.Level = level
+				block.HeadingID = id
+
+				// find the end of the underline
+				for i < len(data) && data[i] != '\n' {
+					i++
+				}
+				return i
+			}
+		}
+
+		// if the next line starts a block of HTML, then the paragraph ends here
+		if p.extensions&LaxHTMLBlocks != 0 {
+			if data[i] == '<' && p.html(current, false) > 0 {
+				// rewind to before the HTML block
+				p.renderParagraph(data[:i])
+				return i
+			}
+		}
+
+		// if there's a prefixed heading or a horizontal rule after this, paragraph is over
+		if p.isPrefixHeading(current) || p.isHRule(current) {
+			p.renderParagraph(data[:i])
+			return i
+		}
+
+		// if there's a fenced code block, paragraph is over
+		if p.extensions&FencedCode != 0 {
+			if p.fencedCodeBlock(current, false) > 0 {
+				p.renderParagraph(data[:i])
+				return i
+			}
+		}
+
+		// if there's a definition list item, prev line is a definition term
+		if p.extensions&DefinitionLists != 0 {
+			if p.dliPrefix(current) != 0 {
+				ret := p.list(data[prev:], ListTypeDefinition)
+				return ret
+			}
+		}
+
+		// if there's a list after this, paragraph is over
+		if p.extensions&NoEmptyLineBeforeBlock != 0 {
+			if p.uliPrefix(current) != 0 ||
+				p.oliPrefix(current) != 0 ||
+				p.quotePrefix(current) != 0 ||
+				p.codePrefix(current) != 0 {
+				p.renderParagraph(data[:i])
+				return i
+			}
+		}
+
+		// otherwise, scan to the beginning of the next line
+		nl := bytes.IndexByte(data[i:], '\n')
+		if nl >= 0 {
+			i += nl + 1
+		} else {
+			i += len(data[i:])
+		}
+	}
+
+	p.renderParagraph(data[:i])
+	return i
+}
+
+func skipChar(data []byte, start int, char byte) int {
+	i := start
+	for i < len(data) && data[i] == char {
+		i++
+	}
+	return i
+}
+
+func skipUntilChar(text []byte, start int, char byte) int {
+	i := start
+	for i < len(text) && text[i] != char {
+		i++
+	}
+	return i
+}
+
+// SanitizedAnchorName returns a sanitized anchor name for the given text.
+//
+// It implements the algorithm specified in the package comment.
+func SanitizedAnchorName(text string) string {
+	var anchorName []rune
+	futureDash := false
+	for _, r := range text {
+		switch {
+		case unicode.IsLetter(r) || unicode.IsNumber(r):
+			if futureDash && len(anchorName) > 0 {
+				anchorName = append(anchorName, '-')
+			}
+			futureDash = false
+			anchorName = append(anchorName, unicode.ToLower(r))
+		default:
+			futureDash = true
+		}
+	}
+	return string(anchorName)
+}
diff --git a/vendor/github.com/russross/blackfriday/v2/doc.go b/vendor/github.com/russross/blackfriday/v2/doc.go
new file mode 100644
index 0000000..57ff152
--- /dev/null
+++ b/vendor/github.com/russross/blackfriday/v2/doc.go
@@ -0,0 +1,46 @@
+// Package blackfriday is a markdown processor.
+//
+// It translates plain text with simple formatting rules into an AST, which can
+// then be further processed to HTML (provided by Blackfriday itself) or other
+// formats (provided by the community).
+//
+// The simplest way to invoke Blackfriday is to call the Run function. It will
+// take a text input and produce a text output in HTML (or other format).
+//
+// A slightly more sophisticated way to use Blackfriday is to create a Markdown
+// processor and to call Parse, which returns a syntax tree for the input
+// document. You can leverage Blackfriday's parsing for content extraction from
+// markdown documents. You can assign a custom renderer and set various options
+// to the Markdown processor.
+//
+// If you're interested in calling Blackfriday from command line, see
+// https://github.com/russross/blackfriday-tool.
+//
+// Sanitized Anchor Names
+//
+// Blackfriday includes an algorithm for creating sanitized anchor names
+// corresponding to a given input text. This algorithm is used to create
+// anchors for headings when AutoHeadingIDs extension is enabled. The
+// algorithm is specified below, so that other packages can create
+// compatible anchor names and links to those anchors.
+//
+// The algorithm iterates over the input text, interpreted as UTF-8,
+// one Unicode code point (rune) at a time. All runes that are letters (category L)
+// or numbers (category N) are considered valid characters. They are mapped to
+// lower case, and included in the output. All other runes are considered
+// invalid characters. Invalid characters that precede the first valid character,
+// as well as invalid character that follow the last valid character
+// are dropped completely. All other sequences of invalid characters
+// between two valid characters are replaced with a single dash character '-'.
+//
+// SanitizedAnchorName exposes this functionality, and can be used to
+// create compatible links to the anchor names generated by blackfriday.
+// This algorithm is also implemented in a small standalone package at
+// github.com/shurcooL/sanitized_anchor_name. It can be useful for clients
+// that want a small package and don't need full functionality of blackfriday.
+package blackfriday
+
+// NOTE: Keep Sanitized Anchor Name algorithm in sync with package
+//       github.com/shurcooL/sanitized_anchor_name.
+//       Otherwise, users of sanitized_anchor_name will get anchor names
+//       that are incompatible with those generated by blackfriday.
diff --git a/vendor/github.com/russross/blackfriday/v2/entities.go b/vendor/github.com/russross/blackfriday/v2/entities.go
new file mode 100644
index 0000000..a2c3edb
--- /dev/null
+++ b/vendor/github.com/russross/blackfriday/v2/entities.go
@@ -0,0 +1,2236 @@
+package blackfriday
+
+// Extracted from https://html.spec.whatwg.org/multipage/entities.json
+var entities = map[string]bool{
+	"&AElig":                            true,
+	"&AElig;":                           true,
+	"&AMP":                              true,
+	"&AMP;":                             true,
+	"&Aacute":                           true,
+	"&Aacute;":                          true,
+	"&Abreve;":                          true,
+	"&Acirc":                            true,
+	"&Acirc;":                           true,
+	"&Acy;":                             true,
+	"&Afr;":                             true,
+	"&Agrave":                           true,
+	"&Agrave;":                          true,
+	"&Alpha;":                           true,
+	"&Amacr;":                           true,
+	"&And;":                             true,
+	"&Aogon;":                           true,
+	"&Aopf;":                            true,
+	"&ApplyFunction;":                   true,
+	"&Aring":                            true,
+	"&Aring;":                           true,
+	"&Ascr;":                            true,
+	"&Assign;":                          true,
+	"&Atilde":                           true,
+	"&Atilde;":                          true,
+	"&Auml":                             true,
+	"&Auml;":                            true,
+	"&Backslash;":                       true,
+	"&Barv;":                            true,
+	"&Barwed;":                          true,
+	"&Bcy;":                             true,
+	"&Because;":                         true,
+	"&Bernoullis;":                      true,
+	"&Beta;":                            true,
+	"&Bfr;":                             true,
+	"&Bopf;":                            true,
+	"&Breve;":                           true,
+	"&Bscr;":                            true,
+	"&Bumpeq;":                          true,
+	"&CHcy;":                            true,
+	"&COPY":                             true,
+	"&COPY;":                            true,
+	"&Cacute;":                          true,
+	"&Cap;":                             true,
+	"&CapitalDifferentialD;":            true,
+	"&Cayleys;":                         true,
+	"&Ccaron;":                          true,
+	"&Ccedil":                           true,
+	"&Ccedil;":                          true,
+	"&Ccirc;":                           true,
+	"&Cconint;":                         true,
+	"&Cdot;":                            true,
+	"&Cedilla;":                         true,
+	"&CenterDot;":                       true,
+	"&Cfr;":                             true,
+	"&Chi;":                             true,
+	"&CircleDot;":                       true,
+	"&CircleMinus;":                     true,
+	"&CirclePlus;":                      true,
+	"&CircleTimes;":                     true,
+	"&ClockwiseContourIntegral;":        true,
+	"&CloseCurlyDoubleQuote;":           true,
+	"&CloseCurlyQuote;":                 true,
+	"&Colon;":                           true,
+	"&Colone;":                          true,
+	"&Congruent;":                       true,
+	"&Conint;":                          true,
+	"&ContourIntegral;":                 true,
+	"&Copf;":                            true,
+	"&Coproduct;":                       true,
+	"&CounterClockwiseContourIntegral;": true,
+	"&Cross;":                           true,
+	"&Cscr;":                            true,
+	"&Cup;":                             true,
+	"&CupCap;":                          true,
+	"&DD;":                              true,
+	"&DDotrahd;":                        true,
+	"&DJcy;":                            true,
+	"&DScy;":                            true,
+	"&DZcy;":                            true,
+	"&Dagger;":                          true,
+	"&Darr;":                            true,
+	"&Dashv;":                           true,
+	"&Dcaron;":                          true,
+	"&Dcy;":                             true,
+	"&Del;":                             true,
+	"&Delta;":                           true,
+	"&Dfr;":                             true,
+	"&DiacriticalAcute;":                true,
+	"&DiacriticalDot;":                  true,
+	"&DiacriticalDoubleAcute;":          true,
+	"&DiacriticalGrave;":                true,
+	"&DiacriticalTilde;":                true,
+	"&Diamond;":                         true,
+	"&DifferentialD;":                   true,
+	"&Dopf;":                            true,
+	"&Dot;":                             true,
+	"&DotDot;":                          true,
+	"&DotEqual;":                        true,
+	"&DoubleContourIntegral;":           true,
+	"&DoubleDot;":                       true,
+	"&DoubleDownArrow;":                 true,
+	"&DoubleLeftArrow;":                 true,
+	"&DoubleLeftRightArrow;":            true,
+	"&DoubleLeftTee;":                   true,
+	"&DoubleLongLeftArrow;":             true,
+	"&DoubleLongLeftRightArrow;":        true,
+	"&DoubleLongRightArrow;":            true,
+	"&DoubleRightArrow;":                true,
+	"&DoubleRightTee;":                  true,
+	"&DoubleUpArrow;":                   true,
+	"&DoubleUpDownArrow;":               true,
+	"&DoubleVerticalBar;":               true,
+	"&DownArrow;":                       true,
+	"&DownArrowBar;":                    true,
+	"&DownArrowUpArrow;":                true,
+	"&DownBreve;":                       true,
+	"&DownLeftRightVector;":             true,
+	"&DownLeftTeeVector;":               true,
+	"&DownLeftVector;":                  true,
+	"&DownLeftVectorBar;":               true,
+	"&DownRightTeeVector;":              true,
+	"&DownRightVector;":                 true,
+	"&DownRightVectorBar;":              true,
+	"&DownTee;":                         true,
+	"&DownTeeArrow;":                    true,
+	"&Downarrow;":                       true,
+	"&Dscr;":                            true,
+	"&Dstrok;":                          true,
+	"&ENG;":                             true,
+	"&ETH":                              true,
+	"&ETH;":                             true,
+	"&Eacute":                           true,
+	"&Eacute;":                          true,
+	"&Ecaron;":                          true,
+	"&Ecirc":                            true,
+	"&Ecirc;":                           true,
+	"&Ecy;":                             true,
+	"&Edot;":                            true,
+	"&Efr;":                             true,
+	"&Egrave":                           true,
+	"&Egrave;":                          true,
+	"&Element;":                         true,
+	"&Emacr;":                           true,
+	"&EmptySmallSquare;":                true,
+	"&EmptyVerySmallSquare;":            true,
+	"&Eogon;":                           true,
+	"&Eopf;":                            true,
+	"&Epsilon;":                         true,
+	"&Equal;":                           true,
+	"&EqualTilde;":                      true,
+	"&Equilibrium;":                     true,
+	"&Escr;":                            true,
+	"&Esim;":                            true,
+	"&Eta;":                             true,
+	"&Euml":                             true,
+	"&Euml;":                            true,
+	"&Exists;":                          true,
+	"&ExponentialE;":                    true,
+	"&Fcy;":                             true,
+	"&Ffr;":                             true,
+	"&FilledSmallSquare;":               true,
+	"&FilledVerySmallSquare;":           true,
+	"&Fopf;":                            true,
+	"&ForAll;":                          true,
+	"&Fouriertrf;":                      true,
+	"&Fscr;":                            true,
+	"&GJcy;":                            true,
+	"&GT":                               true,
+	"&GT;":                              true,
+	"&Gamma;":                           true,
+	"&Gammad;":                          true,
+	"&Gbreve;":                          true,
+	"&Gcedil;":                          true,
+	"&Gcirc;":                           true,
+	"&Gcy;":                             true,
+	"&Gdot;":                            true,
+	"&Gfr;":                             true,
+	"&Gg;":                              true,
+	"&Gopf;":                            true,
+	"&GreaterEqual;":                    true,
+	"&GreaterEqualLess;":                true,
+	"&GreaterFullEqual;":                true,
+	"&GreaterGreater;":                  true,
+	"&GreaterLess;":                     true,
+	"&GreaterSlantEqual;":               true,
+	"&GreaterTilde;":                    true,
+	"&Gscr;":                            true,
+	"&Gt;":                              true,
+	"&HARDcy;":                          true,
+	"&Hacek;":                           true,
+	"&Hat;":                             true,
+	"&Hcirc;":                           true,
+	"&Hfr;":                             true,
+	"&HilbertSpace;":                    true,
+	"&Hopf;":                            true,
+	"&HorizontalLine;":                  true,
+	"&Hscr;":                            true,
+	"&Hstrok;":                          true,
+	"&HumpDownHump;":                    true,
+	"&HumpEqual;":                       true,
+	"&IEcy;":                            true,
+	"&IJlig;":                           true,
+	"&IOcy;":                            true,
+	"&Iacute":                           true,
+	"&Iacute;":                          true,
+	"&Icirc":                            true,
+	"&Icirc;":                           true,
+	"&Icy;":                             true,
+	"&Idot;":                            true,
+	"&Ifr;":                             true,
+	"&Igrave":                           true,
+	"&Igrave;":                          true,
+	"&Im;":                              true,
+	"&Imacr;":                           true,
+	"&ImaginaryI;":                      true,
+	"&Implies;":                         true,
+	"&Int;":                             true,
+	"&Integral;":                        true,
+	"&Intersection;":                    true,
+	"&InvisibleComma;":                  true,
+	"&InvisibleTimes;":                  true,
+	"&Iogon;":                           true,
+	"&Iopf;":                            true,
+	"&Iota;":                            true,
+	"&Iscr;":                            true,
+	"&Itilde;":                          true,
+	"&Iukcy;":                           true,
+	"&Iuml":                             true,
+	"&Iuml;":                            true,
+	"&Jcirc;":                           true,
+	"&Jcy;":                             true,
+	"&Jfr;":                             true,
+	"&Jopf;":                            true,
+	"&Jscr;":                            true,
+	"&Jsercy;":                          true,
+	"&Jukcy;":                           true,
+	"&KHcy;":                            true,
+	"&KJcy;":                            true,
+	"&Kappa;":                           true,
+	"&Kcedil;":                          true,
+	"&Kcy;":                             true,
+	"&Kfr;":                             true,
+	"&Kopf;":                            true,
+	"&Kscr;":                            true,
+	"&LJcy;":                            true,
+	"&LT":                               true,
+	"&LT;":                              true,
+	"&Lacute;":                          true,
+	"&Lambda;":                          true,
+	"&Lang;":                            true,
+	"&Laplacetrf;":                      true,
+	"&Larr;":                            true,
+	"&Lcaron;":                          true,
+	"&Lcedil;":                          true,
+	"&Lcy;":                             true,
+	"&LeftAngleBracket;":                true,
+	"&LeftArrow;":                       true,
+	"&LeftArrowBar;":                    true,
+	"&LeftArrowRightArrow;":             true,
+	"&LeftCeiling;":                     true,
+	"&LeftDoubleBracket;":               true,
+	"&LeftDownTeeVector;":               true,
+	"&LeftDownVector;":                  true,
+	"&LeftDownVectorBar;":               true,
+	"&LeftFloor;":                       true,
+	"&LeftRightArrow;":                  true,
+	"&LeftRightVector;":                 true,
+	"&LeftTee;":                         true,
+	"&LeftTeeArrow;":                    true,
+	"&LeftTeeVector;":                   true,
+	"&LeftTriangle;":                    true,
+	"&LeftTriangleBar;":                 true,
+	"&LeftTriangleEqual;":               true,
+	"&LeftUpDownVector;":                true,
+	"&LeftUpTeeVector;":                 true,
+	"&LeftUpVector;":                    true,
+	"&LeftUpVectorBar;":                 true,
+	"&LeftVector;":                      true,
+	"&LeftVectorBar;":                   true,
+	"&Leftarrow;":                       true,
+	"&Leftrightarrow;":                  true,
+	"&LessEqualGreater;":                true,
+	"&LessFullEqual;":                   true,
+	"&LessGreater;":                     true,
+	"&LessLess;":                        true,
+	"&LessSlantEqual;":                  true,
+	"&LessTilde;":                       true,
+	"&Lfr;":                             true,
+	"&Ll;":                              true,
+	"&Lleftarrow;":                      true,
+	"&Lmidot;":                          true,
+	"&LongLeftArrow;":                   true,
+	"&LongLeftRightArrow;":              true,
+	"&LongRightArrow;":                  true,
+	"&Longleftarrow;":                   true,
+	"&Longleftrightarrow;":              true,
+	"&Longrightarrow;":                  true,
+	"&Lopf;":                            true,
+	"&LowerLeftArrow;":                  true,
+	"&LowerRightArrow;":                 true,
+	"&Lscr;":                            true,
+	"&Lsh;":                             true,
+	"&Lstrok;":                          true,
+	"&Lt;":                              true,
+	"&Map;":                             true,
+	"&Mcy;":                             true,
+	"&MediumSpace;":                     true,
+	"&Mellintrf;":                       true,
+	"&Mfr;":                             true,
+	"&MinusPlus;":                       true,
+	"&Mopf;":                            true,
+	"&Mscr;":                            true,
+	"&Mu;":                              true,
+	"&NJcy;":                            true,
+	"&Nacute;":                          true,
+	"&Ncaron;":                          true,
+	"&Ncedil;":                          true,
+	"&Ncy;":                             true,
+	"&NegativeMediumSpace;":             true,
+	"&NegativeThickSpace;":              true,
+	"&NegativeThinSpace;":               true,
+	"&NegativeVeryThinSpace;":           true,
+	"&NestedGreaterGreater;":            true,
+	"&NestedLessLess;":                  true,
+	"&NewLine;":                         true,
+	"&Nfr;":                             true,
+	"&NoBreak;":                         true,
+	"&NonBreakingSpace;":                true,
+	"&Nopf;":                            true,
+	"&Not;":                             true,
+	"&NotCongruent;":                    true,
+	"&NotCupCap;":                       true,
+	"&NotDoubleVerticalBar;":            true,
+	"&NotElement;":                      true,
+	"&NotEqual;":                        true,
+	"&NotEqualTilde;":                   true,
+	"&NotExists;":                       true,
+	"&NotGreater;":                      true,
+	"&NotGreaterEqual;":                 true,
+	"&NotGreaterFullEqual;":             true,
+	"&NotGreaterGreater;":               true,
+	"&NotGreaterLess;":                  true,
+	"&NotGreaterSlantEqual;":            true,
+	"&NotGreaterTilde;":                 true,
+	"&NotHumpDownHump;":                 true,
+	"&NotHumpEqual;":                    true,
+	"&NotLeftTriangle;":                 true,
+	"&NotLeftTriangleBar;":              true,
+	"&NotLeftTriangleEqual;":            true,
+	"&NotLess;":                         true,
+	"&NotLessEqual;":                    true,
+	"&NotLessGreater;":                  true,
+	"&NotLessLess;":                     true,
+	"&NotLessSlantEqual;":               true,
+	"&NotLessTilde;":                    true,
+	"&NotNestedGreaterGreater;":         true,
+	"&NotNestedLessLess;":               true,
+	"&NotPrecedes;":                     true,
+	"&NotPrecedesEqual;":                true,
+	"&NotPrecedesSlantEqual;":           true,
+	"&NotReverseElement;":               true,
+	"&NotRightTriangle;":                true,
+	"&NotRightTriangleBar;":             true,
+	"&NotRightTriangleEqual;":           true,
+	"&NotSquareSubset;":                 true,
+	"&NotSquareSubsetEqual;":            true,
+	"&NotSquareSuperset;":               true,
+	"&NotSquareSupersetEqual;":          true,
+	"&NotSubset;":                       true,
+	"&NotSubsetEqual;":                  true,
+	"&NotSucceeds;":                     true,
+	"&NotSucceedsEqual;":                true,
+	"&NotSucceedsSlantEqual;":           true,
+	"&NotSucceedsTilde;":                true,
+	"&NotSuperset;":                     true,
+	"&NotSupersetEqual;":                true,
+	"&NotTilde;":                        true,
+	"&NotTildeEqual;":                   true,
+	"&NotTildeFullEqual;":               true,
+	"&NotTildeTilde;":                   true,
+	"&NotVerticalBar;":                  true,
+	"&Nscr;":                            true,
+	"&Ntilde":                           true,
+	"&Ntilde;":                          true,
+	"&Nu;":                              true,
+	"&OElig;":                           true,
+	"&Oacute":                           true,
+	"&Oacute;":                          true,
+	"&Ocirc":                            true,
+	"&Ocirc;":                           true,
+	"&Ocy;":                             true,
+	"&Odblac;":                          true,
+	"&Ofr;":                             true,
+	"&Ograve":                           true,
+	"&Ograve;":                          true,
+	"&Omacr;":                           true,
+	"&Omega;":                           true,
+	"&Omicron;":                         true,
+	"&Oopf;":                            true,
+	"&OpenCurlyDoubleQuote;":            true,
+	"&OpenCurlyQuote;":                  true,
+	"&Or;":                              true,
+	"&Oscr;":                            true,
+	"&Oslash":                           true,
+	"&Oslash;":                          true,
+	"&Otilde":                           true,
+	"&Otilde;":                          true,
+	"&Otimes;":                          true,
+	"&Ouml":                             true,
+	"&Ouml;":                            true,
+	"&OverBar;":                         true,
+	"&OverBrace;":                       true,
+	"&OverBracket;":                     true,
+	"&OverParenthesis;":                 true,
+	"&PartialD;":                        true,
+	"&Pcy;":                             true,
+	"&Pfr;":                             true,
+	"&Phi;":                             true,
+	"&Pi;":                              true,
+	"&PlusMinus;":                       true,
+	"&Poincareplane;":                   true,
+	"&Popf;":                            true,
+	"&Pr;":                              true,
+	"&Precedes;":                        true,
+	"&PrecedesEqual;":                   true,
+	"&PrecedesSlantEqual;":              true,
+	"&PrecedesTilde;":                   true,
+	"&Prime;":                           true,
+	"&Product;":                         true,
+	"&Proportion;":                      true,
+	"&Proportional;":                    true,
+	"&Pscr;":                            true,
+	"&Psi;":                             true,
+	"&QUOT":                             true,
+	"&QUOT;":                            true,
+	"&Qfr;":                             true,
+	"&Qopf;":                            true,
+	"&Qscr;":                            true,
+	"&RBarr;":                           true,
+	"&REG":                              true,
+	"&REG;":                             true,
+	"&Racute;":                          true,
+	"&Rang;":                            true,
+	"&Rarr;":                            true,
+	"&Rarrtl;":                          true,
+	"&Rcaron;":                          true,
+	"&Rcedil;":                          true,
+	"&Rcy;":                             true,
+	"&Re;":                              true,
+	"&ReverseElement;":                  true,
+	"&ReverseEquilibrium;":              true,
+	"&ReverseUpEquilibrium;":            true,
+	"&Rfr;":                             true,
+	"&Rho;":                             true,
+	"&RightAngleBracket;":               true,
+	"&RightArrow;":                      true,
+	"&RightArrowBar;":                   true,
+	"&RightArrowLeftArrow;":             true,
+	"&RightCeiling;":                    true,
+	"&RightDoubleBracket;":              true,
+	"&RightDownTeeVector;":              true,
+	"&RightDownVector;":                 true,
+	"&RightDownVectorBar;":              true,
+	"&RightFloor;":                      true,
+	"&RightTee;":                        true,
+	"&RightTeeArrow;":                   true,
+	"&RightTeeVector;":                  true,
+	"&RightTriangle;":                   true,
+	"&RightTriangleBar;":                true,
+	"&RightTriangleEqual;":              true,
+	"&RightUpDownVector;":               true,
+	"&RightUpTeeVector;":                true,
+	"&RightUpVector;":                   true,
+	"&RightUpVectorBar;":                true,
+	"&RightVector;":                     true,
+	"&RightVectorBar;":                  true,
+	"&Rightarrow;":                      true,
+	"&Ropf;":                            true,
+	"&RoundImplies;":                    true,
+	"&Rrightarrow;":                     true,
+	"&Rscr;":                            true,
+	"&Rsh;":                             true,
+	"&RuleDelayed;":                     true,
+	"&SHCHcy;":                          true,
+	"&SHcy;":                            true,
+	"&SOFTcy;":                          true,
+	"&Sacute;":                          true,
+	"&Sc;":                              true,
+	"&Scaron;":                          true,
+	"&Scedil;":                          true,
+	"&Scirc;":                           true,
+	"&Scy;":                             true,
+	"&Sfr;":                             true,
+	"&ShortDownArrow;":                  true,
+	"&ShortLeftArrow;":                  true,
+	"&ShortRightArrow;":                 true,
+	"&ShortUpArrow;":                    true,
+	"&Sigma;":                           true,
+	"&SmallCircle;":                     true,
+	"&Sopf;":                            true,
+	"&Sqrt;":                            true,
+	"&Square;":                          true,
+	"&SquareIntersection;":              true,
+	"&SquareSubset;":                    true,
+	"&SquareSubsetEqual;":               true,
+	"&SquareSuperset;":                  true,
+	"&SquareSupersetEqual;":             true,
+	"&SquareUnion;":                     true,
+	"&Sscr;":                            true,
+	"&Star;":                            true,
+	"&Sub;":                             true,
+	"&Subset;":                          true,
+	"&SubsetEqual;":                     true,
+	"&Succeeds;":                        true,
+	"&SucceedsEqual;":                   true,
+	"&SucceedsSlantEqual;":              true,
+	"&SucceedsTilde;":                   true,
+	"&SuchThat;":                        true,
+	"&Sum;":                             true,
+	"&Sup;":                             true,
+	"&Superset;":                        true,
+	"&SupersetEqual;":                   true,
+	"&Supset;":                          true,
+	"&THORN":                            true,
+	"&THORN;":                           true,
+	"&TRADE;":                           true,
+	"&TSHcy;":                           true,
+	"&TScy;":                            true,
+	"&Tab;":                             true,
+	"&Tau;":                             true,
+	"&Tcaron;":                          true,
+	"&Tcedil;":                          true,
+	"&Tcy;":                             true,
+	"&Tfr;":                             true,
+	"&Therefore;":                       true,
+	"&Theta;":                           true,
+	"&ThickSpace;":                      true,
+	"&ThinSpace;":                       true,
+	"&Tilde;":                           true,
+	"&TildeEqual;":                      true,
+	"&TildeFullEqual;":                  true,
+	"&TildeTilde;":                      true,
+	"&Topf;":                            true,
+	"&TripleDot;":                       true,
+	"&Tscr;":                            true,
+	"&Tstrok;":                          true,
+	"&Uacute":                           true,
+	"&Uacute;":                          true,
+	"&Uarr;":                            true,
+	"&Uarrocir;":                        true,
+	"&Ubrcy;":                           true,
+	"&Ubreve;":                          true,
+	"&Ucirc":                            true,
+	"&Ucirc;":                           true,
+	"&Ucy;":                             true,
+	"&Udblac;":                          true,
+	"&Ufr;":                             true,
+	"&Ugrave":                           true,
+	"&Ugrave;":                          true,
+	"&Umacr;":                           true,
+	"&UnderBar;":                        true,
+	"&UnderBrace;":                      true,
+	"&UnderBracket;":                    true,
+	"&UnderParenthesis;":                true,
+	"&Union;":                           true,
+	"&UnionPlus;":                       true,
+	"&Uogon;":                           true,
+	"&Uopf;":                            true,
+	"&UpArrow;":                         true,
+	"&UpArrowBar;":                      true,
+	"&UpArrowDownArrow;":                true,
+	"&UpDownArrow;":                     true,
+	"&UpEquilibrium;":                   true,
+	"&UpTee;":                           true,
+	"&UpTeeArrow;":                      true,
+	"&Uparrow;":                         true,
+	"&Updownarrow;":                     true,
+	"&UpperLeftArrow;":                  true,
+	"&UpperRightArrow;":                 true,
+	"&Upsi;":                            true,
+	"&Upsilon;":                         true,
+	"&Uring;":                           true,
+	"&Uscr;":                            true,
+	"&Utilde;":                          true,
+	"&Uuml":                             true,
+	"&Uuml;":                            true,
+	"&VDash;":                           true,
+	"&Vbar;":                            true,
+	"&Vcy;":                             true,
+	"&Vdash;":                           true,
+	"&Vdashl;":                          true,
+	"&Vee;":                             true,
+	"&Verbar;":                          true,
+	"&Vert;":                            true,
+	"&VerticalBar;":                     true,
+	"&VerticalLine;":                    true,
+	"&VerticalSeparator;":               true,
+	"&VerticalTilde;":                   true,
+	"&VeryThinSpace;":                   true,
+	"&Vfr;":                             true,
+	"&Vopf;":                            true,
+	"&Vscr;":                            true,
+	"&Vvdash;":                          true,
+	"&Wcirc;":                           true,
+	"&Wedge;":                           true,
+	"&Wfr;":                             true,
+	"&Wopf;":                            true,
+	"&Wscr;":                            true,
+	"&Xfr;":                             true,
+	"&Xi;":                              true,
+	"&Xopf;":                            true,
+	"&Xscr;":                            true,
+	"&YAcy;":                            true,
+	"&YIcy;":                            true,
+	"&YUcy;":                            true,
+	"&Yacute":                           true,
+	"&Yacute;":                          true,
+	"&Ycirc;":                           true,
+	"&Ycy;":                             true,
+	"&Yfr;":                             true,
+	"&Yopf;":                            true,
+	"&Yscr;":                            true,
+	"&Yuml;":                            true,
+	"&ZHcy;":                            true,
+	"&Zacute;":                          true,
+	"&Zcaron;":                          true,
+	"&Zcy;":                             true,
+	"&Zdot;":                            true,
+	"&ZeroWidthSpace;":                  true,
+	"&Zeta;":                            true,
+	"&Zfr;":                             true,
+	"&Zopf;":                            true,
+	"&Zscr;":                            true,
+	"&aacute":                           true,
+	"&aacute;":                          true,
+	"&abreve;":                          true,
+	"&ac;":                              true,
+	"&acE;":                             true,
+	"&acd;":                             true,
+	"&acirc":                            true,
+	"&acirc;":                           true,
+	"&acute":                            true,
+	"&acute;":                           true,
+	"&acy;":                             true,
+	"&aelig":                            true,
+	"&aelig;":                           true,
+	"&af;":                              true,
+	"&afr;":                             true,
+	"&agrave":                           true,
+	"&agrave;":                          true,
+	"&alefsym;":                         true,
+	"&aleph;":                           true,
+	"&alpha;":                           true,
+	"&amacr;":                           true,
+	"&amalg;":                           true,
+	"&amp":                              true,
+	"&amp;":                             true,
+	"&and;":                             true,
+	"&andand;":                          true,
+	"&andd;":                            true,
+	"&andslope;":                        true,
+	"&andv;":                            true,
+	"&ang;":                             true,
+	"&ange;":                            true,
+	"&angle;":                           true,
+	"&angmsd;":                          true,
+	"&angmsdaa;":                        true,
+	"&angmsdab;":                        true,
+	"&angmsdac;":                        true,
+	"&angmsdad;":                        true,
+	"&angmsdae;":                        true,
+	"&angmsdaf;":                        true,
+	"&angmsdag;":                        true,
+	"&angmsdah;":                        true,
+	"&angrt;":                           true,
+	"&angrtvb;":                         true,
+	"&angrtvbd;":                        true,
+	"&angsph;":                          true,
+	"&angst;":                           true,
+	"&angzarr;":                         true,
+	"&aogon;":                           true,
+	"&aopf;":                            true,
+	"&ap;":                              true,
+	"&apE;":                             true,
+	"&apacir;":                          true,
+	"&ape;":                             true,
+	"&apid;":                            true,
+	"&apos;":                            true,
+	"&approx;":                          true,
+	"&approxeq;":                        true,
+	"&aring":                            true,
+	"&aring;":                           true,
+	"&ascr;":                            true,
+	"&ast;":                             true,
+	"&asymp;":                           true,
+	"&asympeq;":                         true,
+	"&atilde":                           true,
+	"&atilde;":                          true,
+	"&auml":                             true,
+	"&auml;":                            true,
+	"&awconint;":                        true,
+	"&awint;":                           true,
+	"&bNot;":                            true,
+	"&backcong;":                        true,
+	"&backepsilon;":                     true,
+	"&backprime;":                       true,
+	"&backsim;":                         true,
+	"&backsimeq;":                       true,
+	"&barvee;":                          true,
+	"&barwed;":                          true,
+	"&barwedge;":                        true,
+	"&bbrk;":                            true,
+	"&bbrktbrk;":                        true,
+	"&bcong;":                           true,
+	"&bcy;":                             true,
+	"&bdquo;":                           true,
+	"&becaus;":                          true,
+	"&because;":                         true,
+	"&bemptyv;":                         true,
+	"&bepsi;":                           true,
+	"&bernou;":                          true,
+	"&beta;":                            true,
+	"&beth;":                            true,
+	"&between;":                         true,
+	"&bfr;":                             true,
+	"&bigcap;":                          true,
+	"&bigcirc;":                         true,
+	"&bigcup;":                          true,
+	"&bigodot;":                         true,
+	"&bigoplus;":                        true,
+	"&bigotimes;":                       true,
+	"&bigsqcup;":                        true,
+	"&bigstar;":                         true,
+	"&bigtriangledown;":                 true,
+	"&bigtriangleup;":                   true,
+	"&biguplus;":                        true,
+	"&bigvee;":                          true,
+	"&bigwedge;":                        true,
+	"&bkarow;":                          true,
+	"&blacklozenge;":                    true,
+	"&blacksquare;":                     true,
+	"&blacktriangle;":                   true,
+	"&blacktriangledown;":               true,
+	"&blacktriangleleft;":               true,
+	"&blacktriangleright;":              true,
+	"&blank;":                           true,
+	"&blk12;":                           true,
+	"&blk14;":                           true,
+	"&blk34;":                           true,
+	"&block;":                           true,
+	"&bne;":                             true,
+	"&bnequiv;":                         true,
+	"&bnot;":                            true,
+	"&bopf;":                            true,
+	"&bot;":                             true,
+	"&bottom;":                          true,
+	"&bowtie;":                          true,
+	"&boxDL;":                           true,
+	"&boxDR;":                           true,
+	"&boxDl;":                           true,
+	"&boxDr;":                           true,
+	"&boxH;":                            true,
+	"&boxHD;":                           true,
+	"&boxHU;":                           true,
+	"&boxHd;":                           true,
+	"&boxHu;":                           true,
+	"&boxUL;":                           true,
+	"&boxUR;":                           true,
+	"&boxUl;":                           true,
+	"&boxUr;":                           true,
+	"&boxV;":                            true,
+	"&boxVH;":                           true,
+	"&boxVL;":                           true,
+	"&boxVR;":                           true,
+	"&boxVh;":                           true,
+	"&boxVl;":                           true,
+	"&boxVr;":                           true,
+	"&boxbox;":                          true,
+	"&boxdL;":                           true,
+	"&boxdR;":                           true,
+	"&boxdl;":                           true,
+	"&boxdr;":                           true,
+	"&boxh;":                            true,
+	"&boxhD;":                           true,
+	"&boxhU;":                           true,
+	"&boxhd;":                           true,
+	"&boxhu;":                           true,
+	"&boxminus;":                        true,
+	"&boxplus;":                         true,
+	"&boxtimes;":                        true,
+	"&boxuL;":                           true,
+	"&boxuR;":                           true,
+	"&boxul;":                           true,
+	"&boxur;":                           true,
+	"&boxv;":                            true,
+	"&boxvH;":                           true,
+	"&boxvL;":                           true,
+	"&boxvR;":                           true,
+	"&boxvh;":                           true,
+	"&boxvl;":                           true,
+	"&boxvr;":                           true,
+	"&bprime;":                          true,
+	"&breve;":                           true,
+	"&brvbar":                           true,
+	"&brvbar;":                          true,
+	"&bscr;":                            true,
+	"&bsemi;":                           true,
+	"&bsim;":                            true,
+	"&bsime;":                           true,
+	"&bsol;":                            true,
+	"&bsolb;":                           true,
+	"&bsolhsub;":                        true,
+	"&bull;":                            true,
+	"&bullet;":                          true,
+	"&bump;":                            true,
+	"&bumpE;":                           true,
+	"&bumpe;":                           true,
+	"&bumpeq;":                          true,
+	"&cacute;":                          true,
+	"&cap;":                             true,
+	"&capand;":                          true,
+	"&capbrcup;":                        true,
+	"&capcap;":                          true,
+	"&capcup;":                          true,
+	"&capdot;":                          true,
+	"&caps;":                            true,
+	"&caret;":                           true,
+	"&caron;":                           true,
+	"&ccaps;":                           true,
+	"&ccaron;":                          true,
+	"&ccedil":                           true,
+	"&ccedil;":                          true,
+	"&ccirc;":                           true,
+	"&ccups;":                           true,
+	"&ccupssm;":                         true,
+	"&cdot;":                            true,
+	"&cedil":                            true,
+	"&cedil;":                           true,
+	"&cemptyv;":                         true,
+	"&cent":                             true,
+	"&cent;":                            true,
+	"&centerdot;":                       true,
+	"&cfr;":                             true,
+	"&chcy;":                            true,
+	"&check;":                           true,
+	"&checkmark;":                       true,
+	"&chi;":                             true,
+	"&cir;":                             true,
+	"&cirE;":                            true,
+	"&circ;":                            true,
+	"&circeq;":                          true,
+	"&circlearrowleft;":                 true,
+	"&circlearrowright;":                true,
+	"&circledR;":                        true,
+	"&circledS;":                        true,
+	"&circledast;":                      true,
+	"&circledcirc;":                     true,
+	"&circleddash;":                     true,
+	"&cire;":                            true,
+	"&cirfnint;":                        true,
+	"&cirmid;":                          true,
+	"&cirscir;":                         true,
+	"&clubs;":                           true,
+	"&clubsuit;":                        true,
+	"&colon;":                           true,
+	"&colone;":                          true,
+	"&coloneq;":                         true,
+	"&comma;":                           true,
+	"&commat;":                          true,
+	"&comp;":                            true,
+	"&compfn;":                          true,
+	"&complement;":                      true,
+	"&complexes;":                       true,
+	"&cong;":                            true,
+	"&congdot;":                         true,
+	"&conint;":                          true,
+	"&copf;":                            true,
+	"&coprod;":                          true,
+	"&copy":                             true,
+	"&copy;":                            true,
+	"&copysr;":                          true,
+	"&crarr;":                           true,
+	"&cross;":                           true,
+	"&cscr;":                            true,
+	"&csub;":                            true,
+	"&csube;":                           true,
+	"&csup;":                            true,
+	"&csupe;":                           true,
+	"&ctdot;":                           true,
+	"&cudarrl;":                         true,
+	"&cudarrr;":                         true,
+	"&cuepr;":                           true,
+	"&cuesc;":                           true,
+	"&cularr;":                          true,
+	"&cularrp;":                         true,
+	"&cup;":                             true,
+	"&cupbrcap;":                        true,
+	"&cupcap;":                          true,
+	"&cupcup;":                          true,
+	"&cupdot;":                          true,
+	"&cupor;":                           true,
+	"&cups;":                            true,
+	"&curarr;":                          true,
+	"&curarrm;":                         true,
+	"&curlyeqprec;":                     true,
+	"&curlyeqsucc;":                     true,
+	"&curlyvee;":                        true,
+	"&curlywedge;":                      true,
+	"&curren":                           true,
+	"&curren;":                          true,
+	"&curvearrowleft;":                  true,
+	"&curvearrowright;":                 true,
+	"&cuvee;":                           true,
+	"&cuwed;":                           true,
+	"&cwconint;":                        true,
+	"&cwint;":                           true,
+	"&cylcty;":                          true,
+	"&dArr;":                            true,
+	"&dHar;":                            true,
+	"&dagger;":                          true,
+	"&daleth;":                          true,
+	"&darr;":                            true,
+	"&dash;":                            true,
+	"&dashv;":                           true,
+	"&dbkarow;":                         true,
+	"&dblac;":                           true,
+	"&dcaron;":                          true,
+	"&dcy;":                             true,
+	"&dd;":                              true,
+	"&ddagger;":                         true,
+	"&ddarr;":                           true,
+	"&ddotseq;":                         true,
+	"&deg":                              true,
+	"&deg;":                             true,
+	"&delta;":                           true,
+	"&demptyv;":                         true,
+	"&dfisht;":                          true,
+	"&dfr;":                             true,
+	"&dharl;":                           true,
+	"&dharr;":                           true,
+	"&diam;":                            true,
+	"&diamond;":                         true,
+	"&diamondsuit;":                     true,
+	"&diams;":                           true,
+	"&die;":                             true,
+	"&digamma;":                         true,
+	"&disin;":                           true,
+	"&div;":                             true,
+	"&divide":                           true,
+	"&divide;":                          true,
+	"&divideontimes;":                   true,
+	"&divonx;":                          true,
+	"&djcy;":                            true,
+	"&dlcorn;":                          true,
+	"&dlcrop;":                          true,
+	"&dollar;":                          true,
+	"&dopf;":                            true,
+	"&dot;":                             true,
+	"&doteq;":                           true,
+	"&doteqdot;":                        true,
+	"&dotminus;":                        true,
+	"&dotplus;":                         true,
+	"&dotsquare;":                       true,
+	"&doublebarwedge;":                  true,
+	"&downarrow;":                       true,
+	"&downdownarrows;":                  true,
+	"&downharpoonleft;":                 true,
+	"&downharpoonright;":                true,
+	"&drbkarow;":                        true,
+	"&drcorn;":                          true,
+	"&drcrop;":                          true,
+	"&dscr;":                            true,
+	"&dscy;":                            true,
+	"&dsol;":                            true,
+	"&dstrok;":                          true,
+	"&dtdot;":                           true,
+	"&dtri;":                            true,
+	"&dtrif;":                           true,
+	"&duarr;":                           true,
+	"&duhar;":                           true,
+	"&dwangle;":                         true,
+	"&dzcy;":                            true,
+	"&dzigrarr;":                        true,
+	"&eDDot;":                           true,
+	"&eDot;":                            true,
+	"&eacute":                           true,
+	"&eacute;":                          true,
+	"&easter;":                          true,
+	"&ecaron;":                          true,
+	"&ecir;":                            true,
+	"&ecirc":                            true,
+	"&ecirc;":                           true,
+	"&ecolon;":                          true,
+	"&ecy;":                             true,
+	"&edot;":                            true,
+	"&ee;":                              true,
+	"&efDot;":                           true,
+	"&efr;":                             true,
+	"&eg;":                              true,
+	"&egrave":                           true,
+	"&egrave;":                          true,
+	"&egs;":                             true,
+	"&egsdot;":                          true,
+	"&el;":                              true,
+	"&elinters;":                        true,
+	"&ell;":                             true,
+	"&els;":                             true,
+	"&elsdot;":                          true,
+	"&emacr;":                           true,
+	"&empty;":                           true,
+	"&emptyset;":                        true,
+	"&emptyv;":                          true,
+	"&emsp13;":                          true,
+	"&emsp14;":                          true,
+	"&emsp;":                            true,
+	"&eng;":                             true,
+	"&ensp;":                            true,
+	"&eogon;":                           true,
+	"&eopf;":                            true,
+	"&epar;":                            true,
+	"&eparsl;":                          true,
+	"&eplus;":                           true,
+	"&epsi;":                            true,
+	"&epsilon;":                         true,
+	"&epsiv;":                           true,
+	"&eqcirc;":                          true,
+	"&eqcolon;":                         true,
+	"&eqsim;":                           true,
+	"&eqslantgtr;":                      true,
+	"&eqslantless;":                     true,
+	"&equals;":                          true,
+	"&equest;":                          true,
+	"&equiv;":                           true,
+	"&equivDD;":                         true,
+	"&eqvparsl;":                        true,
+	"&erDot;":                           true,
+	"&erarr;":                           true,
+	"&escr;":                            true,
+	"&esdot;":                           true,
+	"&esim;":                            true,
+	"&eta;":                             true,
+	"&eth":                              true,
+	"&eth;":                             true,
+	"&euml":                             true,
+	"&euml;":                            true,
+	"&euro;":                            true,
+	"&excl;":                            true,
+	"&exist;":                           true,
+	"&expectation;":                     true,
+	"&exponentiale;":                    true,
+	"&fallingdotseq;":                   true,
+	"&fcy;":                             true,
+	"&female;":                          true,
+	"&ffilig;":                          true,
+	"&fflig;":                           true,
+	"&ffllig;":                          true,
+	"&ffr;":                             true,
+	"&filig;":                           true,
+	"&fjlig;":                           true,
+	"&flat;":                            true,
+	"&fllig;":                           true,
+	"&fltns;":                           true,
+	"&fnof;":                            true,
+	"&fopf;":                            true,
+	"&forall;":                          true,
+	"&fork;":                            true,
+	"&forkv;":                           true,
+	"&fpartint;":                        true,
+	"&frac12":                           true,
+	"&frac12;":                          true,
+	"&frac13;":                          true,
+	"&frac14":                           true,
+	"&frac14;":                          true,
+	"&frac15;":                          true,
+	"&frac16;":                          true,
+	"&frac18;":                          true,
+	"&frac23;":                          true,
+	"&frac25;":                          true,
+	"&frac34":                           true,
+	"&frac34;":                          true,
+	"&frac35;":                          true,
+	"&frac38;":                          true,
+	"&frac45;":                          true,
+	"&frac56;":                          true,
+	"&frac58;":                          true,
+	"&frac78;":                          true,
+	"&frasl;":                           true,
+	"&frown;":                           true,
+	"&fscr;":                            true,
+	"&gE;":                              true,
+	"&gEl;":                             true,
+	"&gacute;":                          true,
+	"&gamma;":                           true,
+	"&gammad;":                          true,
+	"&gap;":                             true,
+	"&gbreve;":                          true,
+	"&gcirc;":                           true,
+	"&gcy;":                             true,
+	"&gdot;":                            true,
+	"&ge;":                              true,
+	"&gel;":                             true,
+	"&geq;":                             true,
+	"&geqq;":                            true,
+	"&geqslant;":                        true,
+	"&ges;":                             true,
+	"&gescc;":                           true,
+	"&gesdot;":                          true,
+	"&gesdoto;":                         true,
+	"&gesdotol;":                        true,
+	"&gesl;":                            true,
+	"&gesles;":                          true,
+	"&gfr;":                             true,
+	"&gg;":                              true,
+	"&ggg;":                             true,
+	"&gimel;":                           true,
+	"&gjcy;":                            true,
+	"&gl;":                              true,
+	"&glE;":                             true,
+	"&gla;":                             true,
+	"&glj;":                             true,
+	"&gnE;":                             true,
+	"&gnap;":                            true,
+	"&gnapprox;":                        true,
+	"&gne;":                             true,
+	"&gneq;":                            true,
+	"&gneqq;":                           true,
+	"&gnsim;":                           true,
+	"&gopf;":                            true,
+	"&grave;":                           true,
+	"&gscr;":                            true,
+	"&gsim;":                            true,
+	"&gsime;":                           true,
+	"&gsiml;":                           true,
+	"&gt":                               true,
+	"&gt;":                              true,
+	"&gtcc;":                            true,
+	"&gtcir;":                           true,
+	"&gtdot;":                           true,
+	"&gtlPar;":                          true,
+	"&gtquest;":                         true,
+	"&gtrapprox;":                       true,
+	"&gtrarr;":                          true,
+	"&gtrdot;":                          true,
+	"&gtreqless;":                       true,
+	"&gtreqqless;":                      true,
+	"&gtrless;":                         true,
+	"&gtrsim;":                          true,
+	"&gvertneqq;":                       true,
+	"&gvnE;":                            true,
+	"&hArr;":                            true,
+	"&hairsp;":                          true,
+	"&half;":                            true,
+	"&hamilt;":                          true,
+	"&hardcy;":                          true,
+	"&harr;":                            true,
+	"&harrcir;":                         true,
+	"&harrw;":                           true,
+	"&hbar;":                            true,
+	"&hcirc;":                           true,
+	"&hearts;":                          true,
+	"&heartsuit;":                       true,
+	"&hellip;":                          true,
+	"&hercon;":                          true,
+	"&hfr;":                             true,
+	"&hksearow;":                        true,
+	"&hkswarow;":                        true,
+	"&hoarr;":                           true,
+	"&homtht;":                          true,
+	"&hookleftarrow;":                   true,
+	"&hookrightarrow;":                  true,
+	"&hopf;":                            true,
+	"&horbar;":                          true,
+	"&hscr;":                            true,
+	"&hslash;":                          true,
+	"&hstrok;":                          true,
+	"&hybull;":                          true,
+	"&hyphen;":                          true,
+	"&iacute":                           true,
+	"&iacute;":                          true,
+	"&ic;":                              true,
+	"&icirc":                            true,
+	"&icirc;":                           true,
+	"&icy;":                             true,
+	"&iecy;":                            true,
+	"&iexcl":                            true,
+	"&iexcl;":                           true,
+	"&iff;":                             true,
+	"&ifr;":                             true,
+	"&igrave":                           true,
+	"&igrave;":                          true,
+	"&ii;":                              true,
+	"&iiiint;":                          true,
+	"&iiint;":                           true,
+	"&iinfin;":                          true,
+	"&iiota;":                           true,
+	"&ijlig;":                           true,
+	"&imacr;":                           true,
+	"&image;":                           true,
+	"&imagline;":                        true,
+	"&imagpart;":                        true,
+	"&imath;":                           true,
+	"&imof;":                            true,
+	"&imped;":                           true,
+	"&in;":                              true,
+	"&incare;":                          true,
+	"&infin;":                           true,
+	"&infintie;":                        true,
+	"&inodot;":                          true,
+	"&int;":                             true,
+	"&intcal;":                          true,
+	"&integers;":                        true,
+	"&intercal;":                        true,
+	"&intlarhk;":                        true,
+	"&intprod;":                         true,
+	"&iocy;":                            true,
+	"&iogon;":                           true,
+	"&iopf;":                            true,
+	"&iota;":                            true,
+	"&iprod;":                           true,
+	"&iquest":                           true,
+	"&iquest;":                          true,
+	"&iscr;":                            true,
+	"&isin;":                            true,
+	"&isinE;":                           true,
+	"&isindot;":                         true,
+	"&isins;":                           true,
+	"&isinsv;":                          true,
+	"&isinv;":                           true,
+	"&it;":                              true,
+	"&itilde;":                          true,
+	"&iukcy;":                           true,
+	"&iuml":                             true,
+	"&iuml;":                            true,
+	"&jcirc;":                           true,
+	"&jcy;":                             true,
+	"&jfr;":                             true,
+	"&jmath;":                           true,
+	"&jopf;":                            true,
+	"&jscr;":                            true,
+	"&jsercy;":                          true,
+	"&jukcy;":                           true,
+	"&kappa;":                           true,
+	"&kappav;":                          true,
+	"&kcedil;":                          true,
+	"&kcy;":                             true,
+	"&kfr;":                             true,
+	"&kgreen;":                          true,
+	"&khcy;":                            true,
+	"&kjcy;":                            true,
+	"&kopf;":                            true,
+	"&kscr;":                            true,
+	"&lAarr;":                           true,
+	"&lArr;":                            true,
+	"&lAtail;":                          true,
+	"&lBarr;":                           true,
+	"&lE;":                              true,
+	"&lEg;":                             true,
+	"&lHar;":                            true,
+	"&lacute;":                          true,
+	"&laemptyv;":                        true,
+	"&lagran;":                          true,
+	"&lambda;":                          true,
+	"&lang;":                            true,
+	"&langd;":                           true,
+	"&langle;":                          true,
+	"&lap;":                             true,
+	"&laquo":                            true,
+	"&laquo;":                           true,
+	"&larr;":                            true,
+	"&larrb;":                           true,
+	"&larrbfs;":                         true,
+	"&larrfs;":                          true,
+	"&larrhk;":                          true,
+	"&larrlp;":                          true,
+	"&larrpl;":                          true,
+	"&larrsim;":                         true,
+	"&larrtl;":                          true,
+	"&lat;":                             true,
+	"&latail;":                          true,
+	"&late;":                            true,
+	"&lates;":                           true,
+	"&lbarr;":                           true,
+	"&lbbrk;":                           true,
+	"&lbrace;":                          true,
+	"&lbrack;":                          true,
+	"&lbrke;":                           true,
+	"&lbrksld;":                         true,
+	"&lbrkslu;":                         true,
+	"&lcaron;":                          true,
+	"&lcedil;":                          true,
+	"&lceil;":                           true,
+	"&lcub;":                            true,
+	"&lcy;":                             true,
+	"&ldca;":                            true,
+	"&ldquo;":                           true,
+	"&ldquor;":                          true,
+	"&ldrdhar;":                         true,
+	"&ldrushar;":                        true,
+	"&ldsh;":                            true,
+	"&le;":                              true,
+	"&leftarrow;":                       true,
+	"&leftarrowtail;":                   true,
+	"&leftharpoondown;":                 true,
+	"&leftharpoonup;":                   true,
+	"&leftleftarrows;":                  true,
+	"&leftrightarrow;":                  true,
+	"&leftrightarrows;":                 true,
+	"&leftrightharpoons;":               true,
+	"&leftrightsquigarrow;":             true,
+	"&leftthreetimes;":                  true,
+	"&leg;":                             true,
+	"&leq;":                             true,
+	"&leqq;":                            true,
+	"&leqslant;":                        true,
+	"&les;":                             true,
+	"&lescc;":                           true,
+	"&lesdot;":                          true,
+	"&lesdoto;":                         true,
+	"&lesdotor;":                        true,
+	"&lesg;":                            true,
+	"&lesges;":                          true,
+	"&lessapprox;":                      true,
+	"&lessdot;":                         true,
+	"&lesseqgtr;":                       true,
+	"&lesseqqgtr;":                      true,
+	"&lessgtr;":                         true,
+	"&lesssim;":                         true,
+	"&lfisht;":                          true,
+	"&lfloor;":                          true,
+	"&lfr;":                             true,
+	"&lg;":                              true,
+	"&lgE;":                             true,
+	"&lhard;":                           true,
+	"&lharu;":                           true,
+	"&lharul;":                          true,
+	"&lhblk;":                           true,
+	"&ljcy;":                            true,
+	"&ll;":                              true,
+	"&llarr;":                           true,
+	"&llcorner;":                        true,
+	"&llhard;":                          true,
+	"&lltri;":                           true,
+	"&lmidot;":                          true,
+	"&lmoust;":                          true,
+	"&lmoustache;":                      true,
+	"&lnE;":                             true,
+	"&lnap;":                            true,
+	"&lnapprox;":                        true,
+	"&lne;":                             true,
+	"&lneq;":                            true,
+	"&lneqq;":                           true,
+	"&lnsim;":                           true,
+	"&loang;":                           true,
+	"&loarr;":                           true,
+	"&lobrk;":                           true,
+	"&longleftarrow;":                   true,
+	"&longleftrightarrow;":              true,
+	"&longmapsto;":                      true,
+	"&longrightarrow;":                  true,
+	"&looparrowleft;":                   true,
+	"&looparrowright;":                  true,
+	"&lopar;":                           true,
+	"&lopf;":                            true,
+	"&loplus;":                          true,
+	"&lotimes;":                         true,
+	"&lowast;":                          true,
+	"&lowbar;":                          true,
+	"&loz;":                             true,
+	"&lozenge;":                         true,
+	"&lozf;":                            true,
+	"&lpar;":                            true,
+	"&lparlt;":                          true,
+	"&lrarr;":                           true,
+	"&lrcorner;":                        true,
+	"&lrhar;":                           true,
+	"&lrhard;":                          true,
+	"&lrm;":                             true,
+	"&lrtri;":                           true,
+	"&lsaquo;":                          true,
+	"&lscr;":                            true,
+	"&lsh;":                             true,
+	"&lsim;":                            true,
+	"&lsime;":                           true,
+	"&lsimg;":                           true,
+	"&lsqb;":                            true,
+	"&lsquo;":                           true,
+	"&lsquor;":                          true,
+	"&lstrok;":                          true,
+	"&lt":                               true,
+	"&lt;":                              true,
+	"&ltcc;":                            true,
+	"&ltcir;":                           true,
+	"&ltdot;":                           true,
+	"&lthree;":                          true,
+	"&ltimes;":                          true,
+	"&ltlarr;":                          true,
+	"&ltquest;":                         true,
+	"&ltrPar;":                          true,
+	"&ltri;":                            true,
+	"&ltrie;":                           true,
+	"&ltrif;":                           true,
+	"&lurdshar;":                        true,
+	"&luruhar;":                         true,
+	"&lvertneqq;":                       true,
+	"&lvnE;":                            true,
+	"&mDDot;":                           true,
+	"&macr":                             true,
+	"&macr;":                            true,
+	"&male;":                            true,
+	"&malt;":                            true,
+	"&maltese;":                         true,
+	"&map;":                             true,
+	"&mapsto;":                          true,
+	"&mapstodown;":                      true,
+	"&mapstoleft;":                      true,
+	"&mapstoup;":                        true,
+	"&marker;":                          true,
+	"&mcomma;":                          true,
+	"&mcy;":                             true,
+	"&mdash;":                           true,
+	"&measuredangle;":                   true,
+	"&mfr;":                             true,
+	"&mho;":                             true,
+	"&micro":                            true,
+	"&micro;":                           true,
+	"&mid;":                             true,
+	"&midast;":                          true,
+	"&midcir;":                          true,
+	"&middot":                           true,
+	"&middot;":                          true,
+	"&minus;":                           true,
+	"&minusb;":                          true,
+	"&minusd;":                          true,
+	"&minusdu;":                         true,
+	"&mlcp;":                            true,
+	"&mldr;":                            true,
+	"&mnplus;":                          true,
+	"&models;":                          true,
+	"&mopf;":                            true,
+	"&mp;":                              true,
+	"&mscr;":                            true,
+	"&mstpos;":                          true,
+	"&mu;":                              true,
+	"&multimap;":                        true,
+	"&mumap;":                           true,
+	"&nGg;":                             true,
+	"&nGt;":                             true,
+	"&nGtv;":                            true,
+	"&nLeftarrow;":                      true,
+	"&nLeftrightarrow;":                 true,
+	"&nLl;":                             true,
+	"&nLt;":                             true,
+	"&nLtv;":                            true,
+	"&nRightarrow;":                     true,
+	"&nVDash;":                          true,
+	"&nVdash;":                          true,
+	"&nabla;":                           true,
+	"&nacute;":                          true,
+	"&nang;":                            true,
+	"&nap;":                             true,
+	"&napE;":                            true,
+	"&napid;":                           true,
+	"&napos;":                           true,
+	"&napprox;":                         true,
+	"&natur;":                           true,
+	"&natural;":                         true,
+	"&naturals;":                        true,
+	"&nbsp":                             true,
+	"&nbsp;":                            true,
+	"&nbump;":                           true,
+	"&nbumpe;":                          true,
+	"&ncap;":                            true,
+	"&ncaron;":                          true,
+	"&ncedil;":                          true,
+	"&ncong;":                           true,
+	"&ncongdot;":                        true,
+	"&ncup;":                            true,
+	"&ncy;":                             true,
+	"&ndash;":                           true,
+	"&ne;":                              true,
+	"&neArr;":                           true,
+	"&nearhk;":                          true,
+	"&nearr;":                           true,
+	"&nearrow;":                         true,
+	"&nedot;":                           true,
+	"&nequiv;":                          true,
+	"&nesear;":                          true,
+	"&nesim;":                           true,
+	"&nexist;":                          true,
+	"&nexists;":                         true,
+	"&nfr;":                             true,
+	"&ngE;":                             true,
+	"&nge;":                             true,
+	"&ngeq;":                            true,
+	"&ngeqq;":                           true,
+	"&ngeqslant;":                       true,
+	"&nges;":                            true,
+	"&ngsim;":                           true,
+	"&ngt;":                             true,
+	"&ngtr;":                            true,
+	"&nhArr;":                           true,
+	"&nharr;":                           true,
+	"&nhpar;":                           true,
+	"&ni;":                              true,
+	"&nis;":                             true,
+	"&nisd;":                            true,
+	"&niv;":                             true,
+	"&njcy;":                            true,
+	"&nlArr;":                           true,
+	"&nlE;":                             true,
+	"&nlarr;":                           true,
+	"&nldr;":                            true,
+	"&nle;":                             true,
+	"&nleftarrow;":                      true,
+	"&nleftrightarrow;":                 true,
+	"&nleq;":                            true,
+	"&nleqq;":                           true,
+	"&nleqslant;":                       true,
+	"&nles;":                            true,
+	"&nless;":                           true,
+	"&nlsim;":                           true,
+	"&nlt;":                             true,
+	"&nltri;":                           true,
+	"&nltrie;":                          true,
+	"&nmid;":                            true,
+	"&nopf;":                            true,
+	"&not":                              true,
+	"&not;":                             true,
+	"&notin;":                           true,
+	"&notinE;":                          true,
+	"&notindot;":                        true,
+	"&notinva;":                         true,
+	"&notinvb;":                         true,
+	"&notinvc;":                         true,
+	"&notni;":                           true,
+	"&notniva;":                         true,
+	"&notnivb;":                         true,
+	"&notnivc;":                         true,
+	"&npar;":                            true,
+	"&nparallel;":                       true,
+	"&nparsl;":                          true,
+	"&npart;":                           true,
+	"&npolint;":                         true,
+	"&npr;":                             true,
+	"&nprcue;":                          true,
+	"&npre;":                            true,
+	"&nprec;":                           true,
+	"&npreceq;":                         true,
+	"&nrArr;":                           true,
+	"&nrarr;":                           true,
+	"&nrarrc;":                          true,
+	"&nrarrw;":                          true,
+	"&nrightarrow;":                     true,
+	"&nrtri;":                           true,
+	"&nrtrie;":                          true,
+	"&nsc;":                             true,
+	"&nsccue;":                          true,
+	"&nsce;":                            true,
+	"&nscr;":                            true,
+	"&nshortmid;":                       true,
+	"&nshortparallel;":                  true,
+	"&nsim;":                            true,
+	"&nsime;":                           true,
+	"&nsimeq;":                          true,
+	"&nsmid;":                           true,
+	"&nspar;":                           true,
+	"&nsqsube;":                         true,
+	"&nsqsupe;":                         true,
+	"&nsub;":                            true,
+	"&nsubE;":                           true,
+	"&nsube;":                           true,
+	"&nsubset;":                         true,
+	"&nsubseteq;":                       true,
+	"&nsubseteqq;":                      true,
+	"&nsucc;":                           true,
+	"&nsucceq;":                         true,
+	"&nsup;":                            true,
+	"&nsupE;":                           true,
+	"&nsupe;":                           true,
+	"&nsupset;":                         true,
+	"&nsupseteq;":                       true,
+	"&nsupseteqq;":                      true,
+	"&ntgl;":                            true,
+	"&ntilde":                           true,
+	"&ntilde;":                          true,
+	"&ntlg;":                            true,
+	"&ntriangleleft;":                   true,
+	"&ntrianglelefteq;":                 true,
+	"&ntriangleright;":                  true,
+	"&ntrianglerighteq;":                true,
+	"&nu;":                              true,
+	"&num;":                             true,
+	"&numero;":                          true,
+	"&numsp;":                           true,
+	"&nvDash;":                          true,
+	"&nvHarr;":                          true,
+	"&nvap;":                            true,
+	"&nvdash;":                          true,
+	"&nvge;":                            true,
+	"&nvgt;":                            true,
+	"&nvinfin;":                         true,
+	"&nvlArr;":                          true,
+	"&nvle;":                            true,
+	"&nvlt;":                            true,
+	"&nvltrie;":                         true,
+	"&nvrArr;":                          true,
+	"&nvrtrie;":                         true,
+	"&nvsim;":                           true,
+	"&nwArr;":                           true,
+	"&nwarhk;":                          true,
+	"&nwarr;":                           true,
+	"&nwarrow;":                         true,
+	"&nwnear;":                          true,
+	"&oS;":                              true,
+	"&oacute":                           true,
+	"&oacute;":                          true,
+	"&oast;":                            true,
+	"&ocir;":                            true,
+	"&ocirc":                            true,
+	"&ocirc;":                           true,
+	"&ocy;":                             true,
+	"&odash;":                           true,
+	"&odblac;":                          true,
+	"&odiv;":                            true,
+	"&odot;":                            true,
+	"&odsold;":                          true,
+	"&oelig;":                           true,
+	"&ofcir;":                           true,
+	"&ofr;":                             true,
+	"&ogon;":                            true,
+	"&ograve":                           true,
+	"&ograve;":                          true,
+	"&ogt;":                             true,
+	"&ohbar;":                           true,
+	"&ohm;":                             true,
+	"&oint;":                            true,
+	"&olarr;":                           true,
+	"&olcir;":                           true,
+	"&olcross;":                         true,
+	"&oline;":                           true,
+	"&olt;":                             true,
+	"&omacr;":                           true,
+	"&omega;":                           true,
+	"&omicron;":                         true,
+	"&omid;":                            true,
+	"&ominus;":                          true,
+	"&oopf;":                            true,
+	"&opar;":                            true,
+	"&operp;":                           true,
+	"&oplus;":                           true,
+	"&or;":                              true,
+	"&orarr;":                           true,
+	"&ord;":                             true,
+	"&order;":                           true,
+	"&orderof;":                         true,
+	"&ordf":                             true,
+	"&ordf;":                            true,
+	"&ordm":                             true,
+	"&ordm;":                            true,
+	"&origof;":                          true,
+	"&oror;":                            true,
+	"&orslope;":                         true,
+	"&orv;":                             true,
+	"&oscr;":                            true,
+	"&oslash":                           true,
+	"&oslash;":                          true,
+	"&osol;":                            true,
+	"&otilde":                           true,
+	"&otilde;":                          true,
+	"&otimes;":                          true,
+	"&otimesas;":                        true,
+	"&ouml":                             true,
+	"&ouml;":                            true,
+	"&ovbar;":                           true,
+	"&par;":                             true,
+	"&para":                             true,
+	"&para;":                            true,
+	"&parallel;":                        true,
+	"&parsim;":                          true,
+	"&parsl;":                           true,
+	"&part;":                            true,
+	"&pcy;":                             true,
+	"&percnt;":                          true,
+	"&period;":                          true,
+	"&permil;":                          true,
+	"&perp;":                            true,
+	"&pertenk;":                         true,
+	"&pfr;":                             true,
+	"&phi;":                             true,
+	"&phiv;":                            true,
+	"&phmmat;":                          true,
+	"&phone;":                           true,
+	"&pi;":                              true,
+	"&pitchfork;":                       true,
+	"&piv;":                             true,
+	"&planck;":                          true,
+	"&planckh;":                         true,
+	"&plankv;":                          true,
+	"&plus;":                            true,
+	"&plusacir;":                        true,
+	"&plusb;":                           true,
+	"&pluscir;":                         true,
+	"&plusdo;":                          true,
+	"&plusdu;":                          true,
+	"&pluse;":                           true,
+	"&plusmn":                           true,
+	"&plusmn;":                          true,
+	"&plussim;":                         true,
+	"&plustwo;":                         true,
+	"&pm;":                              true,
+	"&pointint;":                        true,
+	"&popf;":                            true,
+	"&pound":                            true,
+	"&pound;":                           true,
+	"&pr;":                              true,
+	"&prE;":                             true,
+	"&prap;":                            true,
+	"&prcue;":                           true,
+	"&pre;":                             true,
+	"&prec;":                            true,
+	"&precapprox;":                      true,
+	"&preccurlyeq;":                     true,
+	"&preceq;":                          true,
+	"&precnapprox;":                     true,
+	"&precneqq;":                        true,
+	"&precnsim;":                        true,
+	"&precsim;":                         true,
+	"&prime;":                           true,
+	"&primes;":                          true,
+	"&prnE;":                            true,
+	"&prnap;":                           true,
+	"&prnsim;":                          true,
+	"&prod;":                            true,
+	"&profalar;":                        true,
+	"&profline;":                        true,
+	"&profsurf;":                        true,
+	"&prop;":                            true,
+	"&propto;":                          true,
+	"&prsim;":                           true,
+	"&prurel;":                          true,
+	"&pscr;":                            true,
+	"&psi;":                             true,
+	"&puncsp;":                          true,
+	"&qfr;":                             true,
+	"&qint;":                            true,
+	"&qopf;":                            true,
+	"&qprime;":                          true,
+	"&qscr;":                            true,
+	"&quaternions;":                     true,
+	"&quatint;":                         true,
+	"&quest;":                           true,
+	"&questeq;":                         true,
+	"&quot":                             true,
+	"&quot;":                            true,
+	"&rAarr;":                           true,
+	"&rArr;":                            true,
+	"&rAtail;":                          true,
+	"&rBarr;":                           true,
+	"&rHar;":                            true,
+	"&race;":                            true,
+	"&racute;":                          true,
+	"&radic;":                           true,
+	"&raemptyv;":                        true,
+	"&rang;":                            true,
+	"&rangd;":                           true,
+	"&range;":                           true,
+	"&rangle;":                          true,
+	"&raquo":                            true,
+	"&raquo;":                           true,
+	"&rarr;":                            true,
+	"&rarrap;":                          true,
+	"&rarrb;":                           true,
+	"&rarrbfs;":                         true,
+	"&rarrc;":                           true,
+	"&rarrfs;":                          true,
+	"&rarrhk;":                          true,
+	"&rarrlp;":                          true,
+	"&rarrpl;":                          true,
+	"&rarrsim;":                         true,
+	"&rarrtl;":                          true,
+	"&rarrw;":                           true,
+	"&ratail;":                          true,
+	"&ratio;":                           true,
+	"&rationals;":                       true,
+	"&rbarr;":                           true,
+	"&rbbrk;":                           true,
+	"&rbrace;":                          true,
+	"&rbrack;":                          true,
+	"&rbrke;":                           true,
+	"&rbrksld;":                         true,
+	"&rbrkslu;":                         true,
+	"&rcaron;":                          true,
+	"&rcedil;":                          true,
+	"&rceil;":                           true,
+	"&rcub;":                            true,
+	"&rcy;":                             true,
+	"&rdca;":                            true,
+	"&rdldhar;":                         true,
+	"&rdquo;":                           true,
+	"&rdquor;":                          true,
+	"&rdsh;":                            true,
+	"&real;":                            true,
+	"&realine;":                         true,
+	"&realpart;":                        true,
+	"&reals;":                           true,
+	"&rect;":                            true,
+	"&reg":                              true,
+	"&reg;":                             true,
+	"&rfisht;":                          true,
+	"&rfloor;":                          true,
+	"&rfr;":                             true,
+	"&rhard;":                           true,
+	"&rharu;":                           true,
+	"&rharul;":                          true,
+	"&rho;":                             true,
+	"&rhov;":                            true,
+	"&rightarrow;":                      true,
+	"&rightarrowtail;":                  true,
+	"&rightharpoondown;":                true,
+	"&rightharpoonup;":                  true,
+	"&rightleftarrows;":                 true,
+	"&rightleftharpoons;":               true,
+	"&rightrightarrows;":                true,
+	"&rightsquigarrow;":                 true,
+	"&rightthreetimes;":                 true,
+	"&ring;":                            true,
+	"&risingdotseq;":                    true,
+	"&rlarr;":                           true,
+	"&rlhar;":                           true,
+	"&rlm;":                             true,
+	"&rmoust;":                          true,
+	"&rmoustache;":                      true,
+	"&rnmid;":                           true,
+	"&roang;":                           true,
+	"&roarr;":                           true,
+	"&robrk;":                           true,
+	"&ropar;":                           true,
+	"&ropf;":                            true,
+	"&roplus;":                          true,
+	"&rotimes;":                         true,
+	"&rpar;":                            true,
+	"&rpargt;":                          true,
+	"&rppolint;":                        true,
+	"&rrarr;":                           true,
+	"&rsaquo;":                          true,
+	"&rscr;":                            true,
+	"&rsh;":                             true,
+	"&rsqb;":                            true,
+	"&rsquo;":                           true,
+	"&rsquor;":                          true,
+	"&rthree;":                          true,
+	"&rtimes;":                          true,
+	"&rtri;":                            true,
+	"&rtrie;":                           true,
+	"&rtrif;":                           true,
+	"&rtriltri;":                        true,
+	"&ruluhar;":                         true,
+	"&rx;":                              true,
+	"&sacute;":                          true,
+	"&sbquo;":                           true,
+	"&sc;":                              true,
+	"&scE;":                             true,
+	"&scap;":                            true,
+	"&scaron;":                          true,
+	"&sccue;":                           true,
+	"&sce;":                             true,
+	"&scedil;":                          true,
+	"&scirc;":                           true,
+	"&scnE;":                            true,
+	"&scnap;":                           true,
+	"&scnsim;":                          true,
+	"&scpolint;":                        true,
+	"&scsim;":                           true,
+	"&scy;":                             true,
+	"&sdot;":                            true,
+	"&sdotb;":                           true,
+	"&sdote;":                           true,
+	"&seArr;":                           true,
+	"&searhk;":                          true,
+	"&searr;":                           true,
+	"&searrow;":                         true,
+	"&sect":                             true,
+	"&sect;":                            true,
+	"&semi;":                            true,
+	"&seswar;":                          true,
+	"&setminus;":                        true,
+	"&setmn;":                           true,
+	"&sext;":                            true,
+	"&sfr;":                             true,
+	"&sfrown;":                          true,
+	"&sharp;":                           true,
+	"&shchcy;":                          true,
+	"&shcy;":                            true,
+	"&shortmid;":                        true,
+	"&shortparallel;":                   true,
+	"&shy":                              true,
+	"&shy;":                             true,
+	"&sigma;":                           true,
+	"&sigmaf;":                          true,
+	"&sigmav;":                          true,
+	"&sim;":                             true,
+	"&simdot;":                          true,
+	"&sime;":                            true,
+	"&simeq;":                           true,
+	"&simg;":                            true,
+	"&simgE;":                           true,
+	"&siml;":                            true,
+	"&simlE;":                           true,
+	"&simne;":                           true,
+	"&simplus;":                         true,
+	"&simrarr;":                         true,
+	"&slarr;":                           true,
+	"&smallsetminus;":                   true,
+	"&smashp;":                          true,
+	"&smeparsl;":                        true,
+	"&smid;":                            true,
+	"&smile;":                           true,
+	"&smt;":                             true,
+	"&smte;":                            true,
+	"&smtes;":                           true,
+	"&softcy;":                          true,
+	"&sol;":                             true,
+	"&solb;":                            true,
+	"&solbar;":                          true,
+	"&sopf;":                            true,
+	"&spades;":                          true,
+	"&spadesuit;":                       true,
+	"&spar;":                            true,
+	"&sqcap;":                           true,
+	"&sqcaps;":                          true,
+	"&sqcup;":                           true,
+	"&sqcups;":                          true,
+	"&sqsub;":                           true,
+	"&sqsube;":                          true,
+	"&sqsubset;":                        true,
+	"&sqsubseteq;":                      true,
+	"&sqsup;":                           true,
+	"&sqsupe;":                          true,
+	"&sqsupset;":                        true,
+	"&sqsupseteq;":                      true,
+	"&squ;":                             true,
+	"&square;":                          true,
+	"&squarf;":                          true,
+	"&squf;":                            true,
+	"&srarr;":                           true,
+	"&sscr;":                            true,
+	"&ssetmn;":                          true,
+	"&ssmile;":                          true,
+	"&sstarf;":                          true,
+	"&star;":                            true,
+	"&starf;":                           true,
+	"&straightepsilon;":                 true,
+	"&straightphi;":                     true,
+	"&strns;":                           true,
+	"&sub;":                             true,
+	"&subE;":                            true,
+	"&subdot;":                          true,
+	"&sube;":                            true,
+	"&subedot;":                         true,
+	"&submult;":                         true,
+	"&subnE;":                           true,
+	"&subne;":                           true,
+	"&subplus;":                         true,
+	"&subrarr;":                         true,
+	"&subset;":                          true,
+	"&subseteq;":                        true,
+	"&subseteqq;":                       true,
+	"&subsetneq;":                       true,
+	"&subsetneqq;":                      true,
+	"&subsim;":                          true,
+	"&subsub;":                          true,
+	"&subsup;":                          true,
+	"&succ;":                            true,
+	"&succapprox;":                      true,
+	"&succcurlyeq;":                     true,
+	"&succeq;":                          true,
+	"&succnapprox;":                     true,
+	"&succneqq;":                        true,
+	"&succnsim;":                        true,
+	"&succsim;":                         true,
+	"&sum;":                             true,
+	"&sung;":                            true,
+	"&sup1":                             true,
+	"&sup1;":                            true,
+	"&sup2":                             true,
+	"&sup2;":                            true,
+	"&sup3":                             true,
+	"&sup3;":                            true,
+	"&sup;":                             true,
+	"&supE;":                            true,
+	"&supdot;":                          true,
+	"&supdsub;":                         true,
+	"&supe;":                            true,
+	"&supedot;":                         true,
+	"&suphsol;":                         true,
+	"&suphsub;":                         true,
+	"&suplarr;":                         true,
+	"&supmult;":                         true,
+	"&supnE;":                           true,
+	"&supne;":                           true,
+	"&supplus;":                         true,
+	"&supset;":                          true,
+	"&supseteq;":                        true,
+	"&supseteqq;":                       true,
+	"&supsetneq;":                       true,
+	"&supsetneqq;":                      true,
+	"&supsim;":                          true,
+	"&supsub;":                          true,
+	"&supsup;":                          true,
+	"&swArr;":                           true,
+	"&swarhk;":                          true,
+	"&swarr;":                           true,
+	"&swarrow;":                         true,
+	"&swnwar;":                          true,
+	"&szlig":                            true,
+	"&szlig;":                           true,
+	"&target;":                          true,
+	"&tau;":                             true,
+	"&tbrk;":                            true,
+	"&tcaron;":                          true,
+	"&tcedil;":                          true,
+	"&tcy;":                             true,
+	"&tdot;":                            true,
+	"&telrec;":                          true,
+	"&tfr;":                             true,
+	"&there4;":                          true,
+	"&therefore;":                       true,
+	"&theta;":                           true,
+	"&thetasym;":                        true,
+	"&thetav;":                          true,
+	"&thickapprox;":                     true,
+	"&thicksim;":                        true,
+	"&thinsp;":                          true,
+	"&thkap;":                           true,
+	"&thksim;":                          true,
+	"&thorn":                            true,
+	"&thorn;":                           true,
+	"&tilde;":                           true,
+	"&times":                            true,
+	"&times;":                           true,
+	"&timesb;":                          true,
+	"&timesbar;":                        true,
+	"&timesd;":                          true,
+	"&tint;":                            true,
+	"&toea;":                            true,
+	"&top;":                             true,
+	"&topbot;":                          true,
+	"&topcir;":                          true,
+	"&topf;":                            true,
+	"&topfork;":                         true,
+	"&tosa;":                            true,
+	"&tprime;":                          true,
+	"&trade;":                           true,
+	"&triangle;":                        true,
+	"&triangledown;":                    true,
+	"&triangleleft;":                    true,
+	"&trianglelefteq;":                  true,
+	"&triangleq;":                       true,
+	"&triangleright;":                   true,
+	"&trianglerighteq;":                 true,
+	"&tridot;":                          true,
+	"&trie;":                            true,
+	"&triminus;":                        true,
+	"&triplus;":                         true,
+	"&trisb;":                           true,
+	"&tritime;":                         true,
+	"&trpezium;":                        true,
+	"&tscr;":                            true,
+	"&tscy;":                            true,
+	"&tshcy;":                           true,
+	"&tstrok;":                          true,
+	"&twixt;":                           true,
+	"&twoheadleftarrow;":                true,
+	"&twoheadrightarrow;":               true,
+	"&uArr;":                            true,
+	"&uHar;":                            true,
+	"&uacute":                           true,
+	"&uacute;":                          true,
+	"&uarr;":                            true,
+	"&ubrcy;":                           true,
+	"&ubreve;":                          true,
+	"&ucirc":                            true,
+	"&ucirc;":                           true,
+	"&ucy;":                             true,
+	"&udarr;":                           true,
+	"&udblac;":                          true,
+	"&udhar;":                           true,
+	"&ufisht;":                          true,
+	"&ufr;":                             true,
+	"&ugrave":                           true,
+	"&ugrave;":                          true,
+	"&uharl;":                           true,
+	"&uharr;":                           true,
+	"&uhblk;":                           true,
+	"&ulcorn;":                          true,
+	"&ulcorner;":                        true,
+	"&ulcrop;":                          true,
+	"&ultri;":                           true,
+	"&umacr;":                           true,
+	"&uml":                              true,
+	"&uml;":                             true,
+	"&uogon;":                           true,
+	"&uopf;":                            true,
+	"&uparrow;":                         true,
+	"&updownarrow;":                     true,
+	"&upharpoonleft;":                   true,
+	"&upharpoonright;":                  true,
+	"&uplus;":                           true,
+	"&upsi;":                            true,
+	"&upsih;":                           true,
+	"&upsilon;":                         true,
+	"&upuparrows;":                      true,
+	"&urcorn;":                          true,
+	"&urcorner;":                        true,
+	"&urcrop;":                          true,
+	"&uring;":                           true,
+	"&urtri;":                           true,
+	"&uscr;":                            true,
+	"&utdot;":                           true,
+	"&utilde;":                          true,
+	"&utri;":                            true,
+	"&utrif;":                           true,
+	"&uuarr;":                           true,
+	"&uuml":                             true,
+	"&uuml;":                            true,
+	"&uwangle;":                         true,
+	"&vArr;":                            true,
+	"&vBar;":                            true,
+	"&vBarv;":                           true,
+	"&vDash;":                           true,
+	"&vangrt;":                          true,
+	"&varepsilon;":                      true,
+	"&varkappa;":                        true,
+	"&varnothing;":                      true,
+	"&varphi;":                          true,
+	"&varpi;":                           true,
+	"&varpropto;":                       true,
+	"&varr;":                            true,
+	"&varrho;":                          true,
+	"&varsigma;":                        true,
+	"&varsubsetneq;":                    true,
+	"&varsubsetneqq;":                   true,
+	"&varsupsetneq;":                    true,
+	"&varsupsetneqq;":                   true,
+	"&vartheta;":                        true,
+	"&vartriangleleft;":                 true,
+	"&vartriangleright;":                true,
+	"&vcy;":                             true,
+	"&vdash;":                           true,
+	"&vee;":                             true,
+	"&veebar;":                          true,
+	"&veeeq;":                           true,
+	"&vellip;":                          true,
+	"&verbar;":                          true,
+	"&vert;":                            true,
+	"&vfr;":                             true,
+	"&vltri;":                           true,
+	"&vnsub;":                           true,
+	"&vnsup;":                           true,
+	"&vopf;":                            true,
+	"&vprop;":                           true,
+	"&vrtri;":                           true,
+	"&vscr;":                            true,
+	"&vsubnE;":                          true,
+	"&vsubne;":                          true,
+	"&vsupnE;":                          true,
+	"&vsupne;":                          true,
+	"&vzigzag;":                         true,
+	"&wcirc;":                           true,
+	"&wedbar;":                          true,
+	"&wedge;":                           true,
+	"&wedgeq;":                          true,
+	"&weierp;":                          true,
+	"&wfr;":                             true,
+	"&wopf;":                            true,
+	"&wp;":                              true,
+	"&wr;":                              true,
+	"&wreath;":                          true,
+	"&wscr;":                            true,
+	"&xcap;":                            true,
+	"&xcirc;":                           true,
+	"&xcup;":                            true,
+	"&xdtri;":                           true,
+	"&xfr;":                             true,
+	"&xhArr;":                           true,
+	"&xharr;":                           true,
+	"&xi;":                              true,
+	"&xlArr;":                           true,
+	"&xlarr;":                           true,
+	"&xmap;":                            true,
+	"&xnis;":                            true,
+	"&xodot;":                           true,
+	"&xopf;":                            true,
+	"&xoplus;":                          true,
+	"&xotime;":                          true,
+	"&xrArr;":                           true,
+	"&xrarr;":                           true,
+	"&xscr;":                            true,
+	"&xsqcup;":                          true,
+	"&xuplus;":                          true,
+	"&xutri;":                           true,
+	"&xvee;":                            true,
+	"&xwedge;":                          true,
+	"&yacute":                           true,
+	"&yacute;":                          true,
+	"&yacy;":                            true,
+	"&ycirc;":                           true,
+	"&ycy;":                             true,
+	"&yen":                              true,
+	"&yen;":                             true,
+	"&yfr;":                             true,
+	"&yicy;":                            true,
+	"&yopf;":                            true,
+	"&yscr;":                            true,
+	"&yucy;":                            true,
+	"&yuml":                             true,
+	"&yuml;":                            true,
+	"&zacute;":                          true,
+	"&zcaron;":                          true,
+	"&zcy;":                             true,
+	"&zdot;":                            true,
+	"&zeetrf;":                          true,
+	"&zeta;":                            true,
+	"&zfr;":                             true,
+	"&zhcy;":                            true,
+	"&zigrarr;":                         true,
+	"&zopf;":                            true,
+	"&zscr;":                            true,
+	"&zwj;":                             true,
+	"&zwnj;":                            true,
+}
diff --git a/vendor/github.com/russross/blackfriday/v2/esc.go b/vendor/github.com/russross/blackfriday/v2/esc.go
new file mode 100644
index 0000000..6ab6010
--- /dev/null
+++ b/vendor/github.com/russross/blackfriday/v2/esc.go
@@ -0,0 +1,70 @@
+package blackfriday
+
+import (
+	"html"
+	"io"
+)
+
+var htmlEscaper = [256][]byte{
+	'&': []byte("&amp;"),
+	'<': []byte("&lt;"),
+	'>': []byte("&gt;"),
+	'"': []byte("&quot;"),
+}
+
+func escapeHTML(w io.Writer, s []byte) {
+	escapeEntities(w, s, false)
+}
+
+func escapeAllHTML(w io.Writer, s []byte) {
+	escapeEntities(w, s, true)
+}
+
+func escapeEntities(w io.Writer, s []byte, escapeValidEntities bool) {
+	var start, end int
+	for end < len(s) {
+		escSeq := htmlEscaper[s[end]]
+		if escSeq != nil {
+			isEntity, entityEnd := nodeIsEntity(s, end)
+			if isEntity && !escapeValidEntities {
+				w.Write(s[start : entityEnd+1])
+				start = entityEnd + 1
+			} else {
+				w.Write(s[start:end])
+				w.Write(escSeq)
+				start = end + 1
+			}
+		}
+		end++
+	}
+	if start < len(s) && end <= len(s) {
+		w.Write(s[start:end])
+	}
+}
+
+func nodeIsEntity(s []byte, end int) (isEntity bool, endEntityPos int) {
+	isEntity = false
+	endEntityPos = end + 1
+
+	if s[end] == '&' {
+		for endEntityPos < len(s) {
+			if s[endEntityPos] == ';' {
+				if entities[string(s[end:endEntityPos+1])] {
+					isEntity = true
+					break
+				}
+			}
+			if !isalnum(s[endEntityPos]) && s[endEntityPos] != '&' && s[endEntityPos] != '#' {
+				break
+			}
+			endEntityPos++
+		}
+	}
+
+	return isEntity, endEntityPos
+}
+
+func escLink(w io.Writer, text []byte) {
+	unesc := html.UnescapeString(string(text))
+	escapeHTML(w, []byte(unesc))
+}
diff --git a/vendor/github.com/russross/blackfriday/v2/go.mod b/vendor/github.com/russross/blackfriday/v2/go.mod
new file mode 100644
index 0000000..620b74e
--- /dev/null
+++ b/vendor/github.com/russross/blackfriday/v2/go.mod
@@ -0,0 +1 @@
+module github.com/russross/blackfriday/v2
diff --git a/vendor/github.com/russross/blackfriday/v2/html.go b/vendor/github.com/russross/blackfriday/v2/html.go
new file mode 100644
index 0000000..cb4f26e
--- /dev/null
+++ b/vendor/github.com/russross/blackfriday/v2/html.go
@@ -0,0 +1,952 @@
+//
+// Blackfriday Markdown Processor
+// Available at http://github.com/russross/blackfriday
+//
+// Copyright © 2011 Russ Ross <russ@russross.com>.
+// Distributed under the Simplified BSD License.
+// See README.md for details.
+//
+
+//
+//
+// HTML rendering backend
+//
+//
+
+package blackfriday
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"regexp"
+	"strings"
+)
+
+// HTMLFlags control optional behavior of HTML renderer.
+type HTMLFlags int
+
+// HTML renderer configuration options.
+const (
+	HTMLFlagsNone           HTMLFlags = 0
+	SkipHTML                HTMLFlags = 1 << iota // Skip preformatted HTML blocks
+	SkipImages                                    // Skip embedded images
+	SkipLinks                                     // Skip all links
+	Safelink                                      // Only link to trusted protocols
+	NofollowLinks                                 // Only link with rel="nofollow"
+	NoreferrerLinks                               // Only link with rel="noreferrer"
+	NoopenerLinks                                 // Only link with rel="noopener"
+	HrefTargetBlank                               // Add a blank target
+	CompletePage                                  // Generate a complete HTML page
+	UseXHTML                                      // Generate XHTML output instead of HTML
+	FootnoteReturnLinks                           // Generate a link at the end of a footnote to return to the source
+	Smartypants                                   // Enable smart punctuation substitutions
+	SmartypantsFractions                          // Enable smart fractions (with Smartypants)
+	SmartypantsDashes                             // Enable smart dashes (with Smartypants)
+	SmartypantsLatexDashes                        // Enable LaTeX-style dashes (with Smartypants)
+	SmartypantsAngledQuotes                       // Enable angled double quotes (with Smartypants) for double quotes rendering
+	SmartypantsQuotesNBSP                         // Enable « French guillemets » (with Smartypants)
+	TOC                                           // Generate a table of contents
+)
+
+var (
+	htmlTagRe = regexp.MustCompile("(?i)^" + htmlTag)
+)
+
+const (
+	htmlTag = "(?:" + openTag + "|" + closeTag + "|" + htmlComment + "|" +
+		processingInstruction + "|" + declaration + "|" + cdata + ")"
+	closeTag              = "</" + tagName + "\\s*[>]"
+	openTag               = "<" + tagName + attribute + "*" + "\\s*/?>"
+	attribute             = "(?:" + "\\s+" + attributeName + attributeValueSpec + "?)"
+	attributeValue        = "(?:" + unquotedValue + "|" + singleQuotedValue + "|" + doubleQuotedValue + ")"
+	attributeValueSpec    = "(?:" + "\\s*=" + "\\s*" + attributeValue + ")"
+	attributeName         = "[a-zA-Z_:][a-zA-Z0-9:._-]*"
+	cdata                 = "<!\\[CDATA\\[[\\s\\S]*?\\]\\]>"
+	declaration           = "<![A-Z]+" + "\\s+[^>]*>"
+	doubleQuotedValue     = "\"[^\"]*\""
+	htmlComment           = "<!---->|<!--(?:-?[^>-])(?:-?[^-])*-->"
+	processingInstruction = "[<][?].*?[?][>]"
+	singleQuotedValue     = "'[^']*'"
+	tagName               = "[A-Za-z][A-Za-z0-9-]*"
+	unquotedValue         = "[^\"'=<>`\\x00-\\x20]+"
+)
+
+// HTMLRendererParameters is a collection of supplementary parameters tweaking
+// the behavior of various parts of HTML renderer.
+type HTMLRendererParameters struct {
+	// Prepend this text to each relative URL.
+	AbsolutePrefix string
+	// Add this text to each footnote anchor, to ensure uniqueness.
+	FootnoteAnchorPrefix string
+	// Show this text inside the <a> tag for a footnote return link, if the
+	// HTML_FOOTNOTE_RETURN_LINKS flag is enabled. If blank, the string
+	// <sup>[return]</sup> is used.
+	FootnoteReturnLinkContents string
+	// If set, add this text to the front of each Heading ID, to ensure
+	// uniqueness.
+	HeadingIDPrefix string
+	// If set, add this text to the back of each Heading ID, to ensure uniqueness.
+	HeadingIDSuffix string
+	// Increase heading levels: if the offset is 1, <h1> becomes <h2> etc.
+	// Negative offset is also valid.
+	// Resulting levels are clipped between 1 and 6.
+	HeadingLevelOffset int
+
+	Title string // Document title (used if CompletePage is set)
+	CSS   string // Optional CSS file URL (used if CompletePage is set)
+	Icon  string // Optional icon file URL (used if CompletePage is set)
+
+	Flags HTMLFlags // Flags allow customizing this renderer's behavior
+}
+
+// HTMLRenderer is a type that implements the Renderer interface for HTML output.
+//
+// Do not create this directly, instead use the NewHTMLRenderer function.
+type HTMLRenderer struct {
+	HTMLRendererParameters
+
+	closeTag string // how to end singleton tags: either " />" or ">"
+
+	// Track heading IDs to prevent ID collision in a single generation.
+	headingIDs map[string]int
+
+	lastOutputLen int
+	disableTags   int
+
+	sr *SPRenderer
+}
+
+const (
+	xhtmlClose = " />"
+	htmlClose  = ">"
+)
+
+// NewHTMLRenderer creates and configures an HTMLRenderer object, which
+// satisfies the Renderer interface.
+func NewHTMLRenderer(params HTMLRendererParameters) *HTMLRenderer {
+	// configure the rendering engine
+	closeTag := htmlClose
+	if params.Flags&UseXHTML != 0 {
+		closeTag = xhtmlClose
+	}
+
+	if params.FootnoteReturnLinkContents == "" {
+		// U+FE0E is VARIATION SELECTOR-15.
+		// It suppresses automatic emoji presentation of the preceding
+		// U+21A9 LEFTWARDS ARROW WITH HOOK on iOS and iPadOS.
+		params.FootnoteReturnLinkContents = "<span aria-label='Return'>↩\ufe0e</span>"
+	}
+
+	return &HTMLRenderer{
+		HTMLRendererParameters: params,
+
+		closeTag:   closeTag,
+		headingIDs: make(map[string]int),
+
+		sr: NewSmartypantsRenderer(params.Flags),
+	}
+}
+
+func isHTMLTag(tag []byte, tagname string) bool {
+	found, _ := findHTMLTagPos(tag, tagname)
+	return found
+}
+
+// Look for a character, but ignore it when it's in any kind of quotes, it
+// might be JavaScript
+func skipUntilCharIgnoreQuotes(html []byte, start int, char byte) int {
+	inSingleQuote := false
+	inDoubleQuote := false
+	inGraveQuote := false
+	i := start
+	for i < len(html) {
+		switch {
+		case html[i] == char && !inSingleQuote && !inDoubleQuote && !inGraveQuote:
+			return i
+		case html[i] == '\'':
+			inSingleQuote = !inSingleQuote
+		case html[i] == '"':
+			inDoubleQuote = !inDoubleQuote
+		case html[i] == '`':
+			inGraveQuote = !inGraveQuote
+		}
+		i++
+	}
+	return start
+}
+
+func findHTMLTagPos(tag []byte, tagname string) (bool, int) {
+	i := 0
+	if i < len(tag) && tag[0] != '<' {
+		return false, -1
+	}
+	i++
+	i = skipSpace(tag, i)
+
+	if i < len(tag) && tag[i] == '/' {
+		i++
+	}
+
+	i = skipSpace(tag, i)
+	j := 0
+	for ; i < len(tag); i, j = i+1, j+1 {
+		if j >= len(tagname) {
+			break
+		}
+
+		if strings.ToLower(string(tag[i]))[0] != tagname[j] {
+			return false, -1
+		}
+	}
+
+	if i == len(tag) {
+		return false, -1
+	}
+
+	rightAngle := skipUntilCharIgnoreQuotes(tag, i, '>')
+	if rightAngle >= i {
+		return true, rightAngle
+	}
+
+	return false, -1
+}
+
+func skipSpace(tag []byte, i int) int {
+	for i < len(tag) && isspace(tag[i]) {
+		i++
+	}
+	return i
+}
+
+func isRelativeLink(link []byte) (yes bool) {
+	// a tag begin with '#'
+	if link[0] == '#' {
+		return true
+	}
+
+	// link begin with '/' but not '//', the second maybe a protocol relative link
+	if len(link) >= 2 && link[0] == '/' && link[1] != '/' {
+		return true
+	}
+
+	// only the root '/'
+	if len(link) == 1 && link[0] == '/' {
+		return true
+	}
+
+	// current directory : begin with "./"
+	if bytes.HasPrefix(link, []byte("./")) {
+		return true
+	}
+
+	// parent directory : begin with "../"
+	if bytes.HasPrefix(link, []byte("../")) {
+		return true
+	}
+
+	return false
+}
+
+func (r *HTMLRenderer) ensureUniqueHeadingID(id string) string {
+	for count, found := r.headingIDs[id]; found; count, found = r.headingIDs[id] {
+		tmp := fmt.Sprintf("%s-%d", id, count+1)
+
+		if _, tmpFound := r.headingIDs[tmp]; !tmpFound {
+			r.headingIDs[id] = count + 1
+			id = tmp
+		} else {
+			id = id + "-1"
+		}
+	}
+
+	if _, found := r.headingIDs[id]; !found {
+		r.headingIDs[id] = 0
+	}
+
+	return id
+}
+
+func (r *HTMLRenderer) addAbsPrefix(link []byte) []byte {
+	if r.AbsolutePrefix != "" && isRelativeLink(link) && link[0] != '.' {
+		newDest := r.AbsolutePrefix
+		if link[0] != '/' {
+			newDest += "/"
+		}
+		newDest += string(link)
+		return []byte(newDest)
+	}
+	return link
+}
+
+func appendLinkAttrs(attrs []string, flags HTMLFlags, link []byte) []string {
+	if isRelativeLink(link) {
+		return attrs
+	}
+	val := []string{}
+	if flags&NofollowLinks != 0 {
+		val = append(val, "nofollow")
+	}
+	if flags&NoreferrerLinks != 0 {
+		val = append(val, "noreferrer")
+	}
+	if flags&NoopenerLinks != 0 {
+		val = append(val, "noopener")
+	}
+	if flags&HrefTargetBlank != 0 {
+		attrs = append(attrs, "target=\"_blank\"")
+	}
+	if len(val) == 0 {
+		return attrs
+	}
+	attr := fmt.Sprintf("rel=%q", strings.Join(val, " "))
+	return append(attrs, attr)
+}
+
+func isMailto(link []byte) bool {
+	return bytes.HasPrefix(link, []byte("mailto:"))
+}
+
+func needSkipLink(flags HTMLFlags, dest []byte) bool {
+	if flags&SkipLinks != 0 {
+		return true
+	}
+	return flags&Safelink != 0 && !isSafeLink(dest) && !isMailto(dest)
+}
+
+func isSmartypantable(node *Node) bool {
+	pt := node.Parent.Type
+	return pt != Link && pt != CodeBlock && pt != Code
+}
+
+func appendLanguageAttr(attrs []string, info []byte) []string {
+	if len(info) == 0 {
+		return attrs
+	}
+	endOfLang := bytes.IndexAny(info, "\t ")
+	if endOfLang < 0 {
+		endOfLang = len(info)
+	}
+	return append(attrs, fmt.Sprintf("class=\"language-%s\"", info[:endOfLang]))
+}
+
+func (r *HTMLRenderer) tag(w io.Writer, name []byte, attrs []string) {
+	w.Write(name)
+	if len(attrs) > 0 {
+		w.Write(spaceBytes)
+		w.Write([]byte(strings.Join(attrs, " ")))
+	}
+	w.Write(gtBytes)
+	r.lastOutputLen = 1
+}
+
+func footnoteRef(prefix string, node *Node) []byte {
+	urlFrag := prefix + string(slugify(node.Destination))
+	anchor := fmt.Sprintf(`<a href="#fn:%s">%d</a>`, urlFrag, node.NoteID)
+	return []byte(fmt.Sprintf(`<sup class="footnote-ref" id="fnref:%s">%s</sup>`, urlFrag, anchor))
+}
+
+func footnoteItem(prefix string, slug []byte) []byte {
+	return []byte(fmt.Sprintf(`<li id="fn:%s%s">`, prefix, slug))
+}
+
+func footnoteReturnLink(prefix, returnLink string, slug []byte) []byte {
+	const format = ` <a class="footnote-return" href="#fnref:%s%s">%s</a>`
+	return []byte(fmt.Sprintf(format, prefix, slug, returnLink))
+}
+
+func itemOpenCR(node *Node) bool {
+	if node.Prev == nil {
+		return false
+	}
+	ld := node.Parent.ListData
+	return !ld.Tight && ld.ListFlags&ListTypeDefinition == 0
+}
+
+func skipParagraphTags(node *Node) bool {
+	grandparent := node.Parent.Parent
+	if grandparent == nil || grandparent.Type != List {
+		return false
+	}
+	tightOrTerm := grandparent.Tight || node.Parent.ListFlags&ListTypeTerm != 0
+	return grandparent.Type == List && tightOrTerm
+}
+
+func cellAlignment(align CellAlignFlags) string {
+	switch align {
+	case TableAlignmentLeft:
+		return "left"
+	case TableAlignmentRight:
+		return "right"
+	case TableAlignmentCenter:
+		return "center"
+	default:
+		return ""
+	}
+}
+
+func (r *HTMLRenderer) out(w io.Writer, text []byte) {
+	if r.disableTags > 0 {
+		w.Write(htmlTagRe.ReplaceAll(text, []byte{}))
+	} else {
+		w.Write(text)
+	}
+	r.lastOutputLen = len(text)
+}
+
+func (r *HTMLRenderer) cr(w io.Writer) {
+	if r.lastOutputLen > 0 {
+		r.out(w, nlBytes)
+	}
+}
+
+var (
+	nlBytes    = []byte{'\n'}
+	gtBytes    = []byte{'>'}
+	spaceBytes = []byte{' '}
+)
+
+var (
+	brTag              = []byte("<br>")
+	brXHTMLTag         = []byte("<br />")
+	emTag              = []byte("<em>")
+	emCloseTag         = []byte("</em>")
+	strongTag          = []byte("<strong>")
+	strongCloseTag     = []byte("</strong>")
+	delTag             = []byte("<del>")
+	delCloseTag        = []byte("</del>")
+	ttTag              = []byte("<tt>")
+	ttCloseTag         = []byte("</tt>")
+	aTag               = []byte("<a")
+	aCloseTag          = []byte("</a>")
+	preTag             = []byte("<pre>")
+	preCloseTag        = []byte("</pre>")
+	codeTag            = []byte("<code>")
+	codeCloseTag       = []byte("</code>")
+	pTag               = []byte("<p>")
+	pCloseTag          = []byte("</p>")
+	blockquoteTag      = []byte("<blockquote>")
+	blockquoteCloseTag = []byte("</blockquote>")
+	hrTag              = []byte("<hr>")
+	hrXHTMLTag         = []byte("<hr />")
+	ulTag              = []byte("<ul>")
+	ulCloseTag         = []byte("</ul>")
+	olTag              = []byte("<ol>")
+	olCloseTag         = []byte("</ol>")
+	dlTag              = []byte("<dl>")
+	dlCloseTag         = []byte("</dl>")
+	liTag              = []byte("<li>")
+	liCloseTag         = []byte("</li>")
+	ddTag              = []byte("<dd>")
+	ddCloseTag         = []byte("</dd>")
+	dtTag              = []byte("<dt>")
+	dtCloseTag         = []byte("</dt>")
+	tableTag           = []byte("<table>")
+	tableCloseTag      = []byte("</table>")
+	tdTag              = []byte("<td")
+	tdCloseTag         = []byte("</td>")
+	thTag              = []byte("<th")
+	thCloseTag         = []byte("</th>")
+	theadTag           = []byte("<thead>")
+	theadCloseTag      = []byte("</thead>")
+	tbodyTag           = []byte("<tbody>")
+	tbodyCloseTag      = []byte("</tbody>")
+	trTag              = []byte("<tr>")
+	trCloseTag         = []byte("</tr>")
+	h1Tag              = []byte("<h1")
+	h1CloseTag         = []byte("</h1>")
+	h2Tag              = []byte("<h2")
+	h2CloseTag         = []byte("</h2>")
+	h3Tag              = []byte("<h3")
+	h3CloseTag         = []byte("</h3>")
+	h4Tag              = []byte("<h4")
+	h4CloseTag         = []byte("</h4>")
+	h5Tag              = []byte("<h5")
+	h5CloseTag         = []byte("</h5>")
+	h6Tag              = []byte("<h6")
+	h6CloseTag         = []byte("</h6>")
+
+	footnotesDivBytes      = []byte("\n<div class=\"footnotes\">\n\n")
+	footnotesCloseDivBytes = []byte("\n</div>\n")
+)
+
+func headingTagsFromLevel(level int) ([]byte, []byte) {
+	if level <= 1 {
+		return h1Tag, h1CloseTag
+	}
+	switch level {
+	case 2:
+		return h2Tag, h2CloseTag
+	case 3:
+		return h3Tag, h3CloseTag
+	case 4:
+		return h4Tag, h4CloseTag
+	case 5:
+		return h5Tag, h5CloseTag
+	}
+	return h6Tag, h6CloseTag
+}
+
+func (r *HTMLRenderer) outHRTag(w io.Writer) {
+	if r.Flags&UseXHTML == 0 {
+		r.out(w, hrTag)
+	} else {
+		r.out(w, hrXHTMLTag)
+	}
+}
+
+// RenderNode is a default renderer of a single node of a syntax tree. For
+// block nodes it will be called twice: first time with entering=true, second
+// time with entering=false, so that it could know when it's working on an open
+// tag and when on close. It writes the result to w.
+//
+// The return value is a way to tell the calling walker to adjust its walk
+// pattern: e.g. it can terminate the traversal by returning Terminate. Or it
+// can ask the walker to skip a subtree of this node by returning SkipChildren.
+// The typical behavior is to return GoToNext, which asks for the usual
+// traversal to the next node.
+func (r *HTMLRenderer) RenderNode(w io.Writer, node *Node, entering bool) WalkStatus {
+	attrs := []string{}
+	switch node.Type {
+	case Text:
+		if r.Flags&Smartypants != 0 {
+			var tmp bytes.Buffer
+			escapeHTML(&tmp, node.Literal)
+			r.sr.Process(w, tmp.Bytes())
+		} else {
+			if node.Parent.Type == Link {
+				escLink(w, node.Literal)
+			} else {
+				escapeHTML(w, node.Literal)
+			}
+		}
+	case Softbreak:
+		r.cr(w)
+		// TODO: make it configurable via out(renderer.softbreak)
+	case Hardbreak:
+		if r.Flags&UseXHTML == 0 {
+			r.out(w, brTag)
+		} else {
+			r.out(w, brXHTMLTag)
+		}
+		r.cr(w)
+	case Emph:
+		if entering {
+			r.out(w, emTag)
+		} else {
+			r.out(w, emCloseTag)
+		}
+	case Strong:
+		if entering {
+			r.out(w, strongTag)
+		} else {
+			r.out(w, strongCloseTag)
+		}
+	case Del:
+		if entering {
+			r.out(w, delTag)
+		} else {
+			r.out(w, delCloseTag)
+		}
+	case HTMLSpan:
+		if r.Flags&SkipHTML != 0 {
+			break
+		}
+		r.out(w, node.Literal)
+	case Link:
+		// mark it but don't link it if it is not a safe link: no smartypants
+		dest := node.LinkData.Destination
+		if needSkipLink(r.Flags, dest) {
+			if entering {
+				r.out(w, ttTag)
+			} else {
+				r.out(w, ttCloseTag)
+			}
+		} else {
+			if entering {
+				dest = r.addAbsPrefix(dest)
+				var hrefBuf bytes.Buffer
+				hrefBuf.WriteString("href=\"")
+				escLink(&hrefBuf, dest)
+				hrefBuf.WriteByte('"')
+				attrs = append(attrs, hrefBuf.String())
+				if node.NoteID != 0 {
+					r.out(w, footnoteRef(r.FootnoteAnchorPrefix, node))
+					break
+				}
+				attrs = appendLinkAttrs(attrs, r.Flags, dest)
+				if len(node.LinkData.Title) > 0 {
+					var titleBuff bytes.Buffer
+					titleBuff.WriteString("title=\"")
+					escapeHTML(&titleBuff, node.LinkData.Title)
+					titleBuff.WriteByte('"')
+					attrs = append(attrs, titleBuff.String())
+				}
+				r.tag(w, aTag, attrs)
+			} else {
+				if node.NoteID != 0 {
+					break
+				}
+				r.out(w, aCloseTag)
+			}
+		}
+	case Image:
+		if r.Flags&SkipImages != 0 {
+			return SkipChildren
+		}
+		if entering {
+			dest := node.LinkData.Destination
+			dest = r.addAbsPrefix(dest)
+			if r.disableTags == 0 {
+				//if options.safe && potentiallyUnsafe(dest) {
+				//out(w, `<img src="" alt="`)
+				//} else {
+				r.out(w, []byte(`<img src="`))
+				escLink(w, dest)
+				r.out(w, []byte(`" alt="`))
+				//}
+			}
+			r.disableTags++
+		} else {
+			r.disableTags--
+			if r.disableTags == 0 {
+				if node.LinkData.Title != nil {
+					r.out(w, []byte(`" title="`))
+					escapeHTML(w, node.LinkData.Title)
+				}
+				r.out(w, []byte(`" />`))
+			}
+		}
+	case Code:
+		r.out(w, codeTag)
+		escapeAllHTML(w, node.Literal)
+		r.out(w, codeCloseTag)
+	case Document:
+		break
+	case Paragraph:
+		if skipParagraphTags(node) {
+			break
+		}
+		if entering {
+			// TODO: untangle this clusterfuck about when the newlines need
+			// to be added and when not.
+			if node.Prev != nil {
+				switch node.Prev.Type {
+				case HTMLBlock, List, Paragraph, Heading, CodeBlock, BlockQuote, HorizontalRule:
+					r.cr(w)
+				}
+			}
+			if node.Parent.Type == BlockQuote && node.Prev == nil {
+				r.cr(w)
+			}
+			r.out(w, pTag)
+		} else {
+			r.out(w, pCloseTag)
+			if !(node.Parent.Type == Item && node.Next == nil) {
+				r.cr(w)
+			}
+		}
+	case BlockQuote:
+		if entering {
+			r.cr(w)
+			r.out(w, blockquoteTag)
+		} else {
+			r.out(w, blockquoteCloseTag)
+			r.cr(w)
+		}
+	case HTMLBlock:
+		if r.Flags&SkipHTML != 0 {
+			break
+		}
+		r.cr(w)
+		r.out(w, node.Literal)
+		r.cr(w)
+	case Heading:
+		headingLevel := r.HTMLRendererParameters.HeadingLevelOffset + node.Level
+		openTag, closeTag := headingTagsFromLevel(headingLevel)
+		if entering {
+			if node.IsTitleblock {
+				attrs = append(attrs, `class="title"`)
+			}
+			if node.HeadingID != "" {
+				id := r.ensureUniqueHeadingID(node.HeadingID)
+				if r.HeadingIDPrefix != "" {
+					id = r.HeadingIDPrefix + id
+				}
+				if r.HeadingIDSuffix != "" {
+					id = id + r.HeadingIDSuffix
+				}
+				attrs = append(attrs, fmt.Sprintf(`id="%s"`, id))
+			}
+			r.cr(w)
+			r.tag(w, openTag, attrs)
+		} else {
+			r.out(w, closeTag)
+			if !(node.Parent.Type == Item && node.Next == nil) {
+				r.cr(w)
+			}
+		}
+	case HorizontalRule:
+		r.cr(w)
+		r.outHRTag(w)
+		r.cr(w)
+	case List:
+		openTag := ulTag
+		closeTag := ulCloseTag
+		if node.ListFlags&ListTypeOrdered != 0 {
+			openTag = olTag
+			closeTag = olCloseTag
+		}
+		if node.ListFlags&ListTypeDefinition != 0 {
+			openTag = dlTag
+			closeTag = dlCloseTag
+		}
+		if entering {
+			if node.IsFootnotesList {
+				r.out(w, footnotesDivBytes)
+				r.outHRTag(w)
+				r.cr(w)
+			}
+			r.cr(w)
+			if node.Parent.Type == Item && node.Parent.Parent.Tight {
+				r.cr(w)
+			}
+			r.tag(w, openTag[:len(openTag)-1], attrs)
+			r.cr(w)
+		} else {
+			r.out(w, closeTag)
+			//cr(w)
+			//if node.parent.Type != Item {
+			//	cr(w)
+			//}
+			if node.Parent.Type == Item && node.Next != nil {
+				r.cr(w)
+			}
+			if node.Parent.Type == Document || node.Parent.Type == BlockQuote {
+				r.cr(w)
+			}
+			if node.IsFootnotesList {
+				r.out(w, footnotesCloseDivBytes)
+			}
+		}
+	case Item:
+		openTag := liTag
+		closeTag := liCloseTag
+		if node.ListFlags&ListTypeDefinition != 0 {
+			openTag = ddTag
+			closeTag = ddCloseTag
+		}
+		if node.ListFlags&ListTypeTerm != 0 {
+			openTag = dtTag
+			closeTag = dtCloseTag
+		}
+		if entering {
+			if itemOpenCR(node) {
+				r.cr(w)
+			}
+			if node.ListData.RefLink != nil {
+				slug := slugify(node.ListData.RefLink)
+				r.out(w, footnoteItem(r.FootnoteAnchorPrefix, slug))
+				break
+			}
+			r.out(w, openTag)
+		} else {
+			if node.ListData.RefLink != nil {
+				slug := slugify(node.ListData.RefLink)
+				if r.Flags&FootnoteReturnLinks != 0 {
+					r.out(w, footnoteReturnLink(r.FootnoteAnchorPrefix, r.FootnoteReturnLinkContents, slug))
+				}
+			}
+			r.out(w, closeTag)
+			r.cr(w)
+		}
+	case CodeBlock:
+		attrs = appendLanguageAttr(attrs, node.Info)
+		r.cr(w)
+		r.out(w, preTag)
+		r.tag(w, codeTag[:len(codeTag)-1], attrs)
+		escapeAllHTML(w, node.Literal)
+		r.out(w, codeCloseTag)
+		r.out(w, preCloseTag)
+		if node.Parent.Type != Item {
+			r.cr(w)
+		}
+	case Table:
+		if entering {
+			r.cr(w)
+			r.out(w, tableTag)
+		} else {
+			r.out(w, tableCloseTag)
+			r.cr(w)
+		}
+	case TableCell:
+		openTag := tdTag
+		closeTag := tdCloseTag
+		if node.IsHeader {
+			openTag = thTag
+			closeTag = thCloseTag
+		}
+		if entering {
+			align := cellAlignment(node.Align)
+			if align != "" {
+				attrs = append(attrs, fmt.Sprintf(`align="%s"`, align))
+			}
+			if node.Prev == nil {
+				r.cr(w)
+			}
+			r.tag(w, openTag, attrs)
+		} else {
+			r.out(w, closeTag)
+			r.cr(w)
+		}
+	case TableHead:
+		if entering {
+			r.cr(w)
+			r.out(w, theadTag)
+		} else {
+			r.out(w, theadCloseTag)
+			r.cr(w)
+		}
+	case TableBody:
+		if entering {
+			r.cr(w)
+			r.out(w, tbodyTag)
+			// XXX: this is to adhere to a rather silly test. Should fix test.
+			if node.FirstChild == nil {
+				r.cr(w)
+			}
+		} else {
+			r.out(w, tbodyCloseTag)
+			r.cr(w)
+		}
+	case TableRow:
+		if entering {
+			r.cr(w)
+			r.out(w, trTag)
+		} else {
+			r.out(w, trCloseTag)
+			r.cr(w)
+		}
+	default:
+		panic("Unknown node type " + node.Type.String())
+	}
+	return GoToNext
+}
+
+// RenderHeader writes HTML document preamble and TOC if requested.
+func (r *HTMLRenderer) RenderHeader(w io.Writer, ast *Node) {
+	r.writeDocumentHeader(w)
+	if r.Flags&TOC != 0 {
+		r.writeTOC(w, ast)
+	}
+}
+
+// RenderFooter writes HTML document footer.
+func (r *HTMLRenderer) RenderFooter(w io.Writer, ast *Node) {
+	if r.Flags&CompletePage == 0 {
+		return
+	}
+	io.WriteString(w, "\n</body>\n</html>\n")
+}
+
+func (r *HTMLRenderer) writeDocumentHeader(w io.Writer) {
+	if r.Flags&CompletePage == 0 {
+		return
+	}
+	ending := ""
+	if r.Flags&UseXHTML != 0 {
+		io.WriteString(w, "<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" ")
+		io.WriteString(w, "\"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n")
+		io.WriteString(w, "<html xmlns=\"http://www.w3.org/1999/xhtml\">\n")
+		ending = " /"
+	} else {
+		io.WriteString(w, "<!DOCTYPE html>\n")
+		io.WriteString(w, "<html>\n")
+	}
+	io.WriteString(w, "<head>\n")
+	io.WriteString(w, "  <title>")
+	if r.Flags&Smartypants != 0 {
+		r.sr.Process(w, []byte(r.Title))
+	} else {
+		escapeHTML(w, []byte(r.Title))
+	}
+	io.WriteString(w, "</title>\n")
+	io.WriteString(w, "  <meta name=\"GENERATOR\" content=\"Blackfriday Markdown Processor v")
+	io.WriteString(w, Version)
+	io.WriteString(w, "\"")
+	io.WriteString(w, ending)
+	io.WriteString(w, ">\n")
+	io.WriteString(w, "  <meta charset=\"utf-8\"")
+	io.WriteString(w, ending)
+	io.WriteString(w, ">\n")
+	if r.CSS != "" {
+		io.WriteString(w, "  <link rel=\"stylesheet\" type=\"text/css\" href=\"")
+		escapeHTML(w, []byte(r.CSS))
+		io.WriteString(w, "\"")
+		io.WriteString(w, ending)
+		io.WriteString(w, ">\n")
+	}
+	if r.Icon != "" {
+		io.WriteString(w, "  <link rel=\"icon\" type=\"image/x-icon\" href=\"")
+		escapeHTML(w, []byte(r.Icon))
+		io.WriteString(w, "\"")
+		io.WriteString(w, ending)
+		io.WriteString(w, ">\n")
+	}
+	io.WriteString(w, "</head>\n")
+	io.WriteString(w, "<body>\n\n")
+}
+
+func (r *HTMLRenderer) writeTOC(w io.Writer, ast *Node) {
+	buf := bytes.Buffer{}
+
+	inHeading := false
+	tocLevel := 0
+	headingCount := 0
+
+	ast.Walk(func(node *Node, entering bool) WalkStatus {
+		if node.Type == Heading && !node.HeadingData.IsTitleblock {
+			inHeading = entering
+			if entering {
+				node.HeadingID = fmt.Sprintf("toc_%d", headingCount)
+				if node.Level == tocLevel {
+					buf.WriteString("</li>\n\n<li>")
+				} else if node.Level < tocLevel {
+					for node.Level < tocLevel {
+						tocLevel--
+						buf.WriteString("</li>\n</ul>")
+					}
+					buf.WriteString("</li>\n\n<li>")
+				} else {
+					for node.Level > tocLevel {
+						tocLevel++
+						buf.WriteString("\n<ul>\n<li>")
+					}
+				}
+
+				fmt.Fprintf(&buf, `<a href="#toc_%d">`, headingCount)
+				headingCount++
+			} else {
+				buf.WriteString("</a>")
+			}
+			return GoToNext
+		}
+
+		if inHeading {
+			return r.RenderNode(&buf, node, entering)
+		}
+
+		return GoToNext
+	})
+
+	for ; tocLevel > 0; tocLevel-- {
+		buf.WriteString("</li>\n</ul>")
+	}
+
+	if buf.Len() > 0 {
+		io.WriteString(w, "<nav>\n")
+		w.Write(buf.Bytes())
+		io.WriteString(w, "\n\n</nav>\n")
+	}
+	r.lastOutputLen = buf.Len()
+}
diff --git a/vendor/github.com/russross/blackfriday/v2/inline.go b/vendor/github.com/russross/blackfriday/v2/inline.go
new file mode 100644
index 0000000..d45bd94
--- /dev/null
+++ b/vendor/github.com/russross/blackfriday/v2/inline.go
@@ -0,0 +1,1228 @@
+//
+// Blackfriday Markdown Processor
+// Available at http://github.com/russross/blackfriday
+//
+// Copyright © 2011 Russ Ross <russ@russross.com>.
+// Distributed under the Simplified BSD License.
+// See README.md for details.
+//
+
+//
+// Functions to parse inline elements.
+//
+
+package blackfriday
+
+import (
+	"bytes"
+	"regexp"
+	"strconv"
+)
+
+var (
+	urlRe    = `((https?|ftp):\/\/|\/)[-A-Za-z0-9+&@#\/%?=~_|!:,.;\(\)]+`
+	anchorRe = regexp.MustCompile(`^(<a\shref="` + urlRe + `"(\stitle="[^"<>]+")?\s?>` + urlRe + `<\/a>)`)
+
+	// https://www.w3.org/TR/html5/syntax.html#character-references
+	// highest unicode code point in 17 planes (2^20): 1,114,112d =
+	// 7 dec digits or 6 hex digits
+	// named entity references can be 2-31 characters with stuff like &lt;
+	// at one end and &CounterClockwiseContourIntegral; at the other. There
+	// are also sometimes numbers at the end, although this isn't inherent
+	// in the specification; there are never numbers anywhere else in
+	// current character references, though; see &frac34; and &blk12;, etc.
+	// https://www.w3.org/TR/html5/syntax.html#named-character-references
+	//
+	// entity := "&" (named group | number ref) ";"
+	// named group := [a-zA-Z]{2,31}[0-9]{0,2}
+	// number ref := "#" (dec ref | hex ref)
+	// dec ref := [0-9]{1,7}
+	// hex ref := ("x" | "X") [0-9a-fA-F]{1,6}
+	htmlEntityRe = regexp.MustCompile(`&([a-zA-Z]{2,31}[0-9]{0,2}|#([0-9]{1,7}|[xX][0-9a-fA-F]{1,6}));`)
+)
+
+// Functions to parse text within a block
+// Each function returns the number of chars taken care of
+// data is the complete block being rendered
+// offset is the number of valid chars before the current cursor
+
+func (p *Markdown) inline(currBlock *Node, data []byte) {
+	// handlers might call us recursively: enforce a maximum depth
+	if p.nesting >= p.maxNesting || len(data) == 0 {
+		return
+	}
+	p.nesting++
+	beg, end := 0, 0
+	for end < len(data) {
+		handler := p.inlineCallback[data[end]]
+		if handler != nil {
+			if consumed, node := handler(p, data, end); consumed == 0 {
+				// No action from the callback.
+				end++
+			} else {
+				// Copy inactive chars into the output.
+				currBlock.AppendChild(text(data[beg:end]))
+				if node != nil {
+					currBlock.AppendChild(node)
+				}
+				// Skip past whatever the callback used.
+				beg = end + consumed
+				end = beg
+			}
+		} else {
+			end++
+		}
+	}
+	if beg < len(data) {
+		if data[end-1] == '\n' {
+			end--
+		}
+		currBlock.AppendChild(text(data[beg:end]))
+	}
+	p.nesting--
+}
+
+// single and double emphasis parsing
+func emphasis(p *Markdown, data []byte, offset int) (int, *Node) {
+	data = data[offset:]
+	c := data[0]
+
+	if len(data) > 2 && data[1] != c {
+		// whitespace cannot follow an opening emphasis;
+		// strikethrough only takes two characters '~~'
+		if c == '~' || isspace(data[1]) {
+			return 0, nil
+		}
+		ret, node := helperEmphasis(p, data[1:], c)
+		if ret == 0 {
+			return 0, nil
+		}
+
+		return ret + 1, node
+	}
+
+	if len(data) > 3 && data[1] == c && data[2] != c {
+		if isspace(data[2]) {
+			return 0, nil
+		}
+		ret, node := helperDoubleEmphasis(p, data[2:], c)
+		if ret == 0 {
+			return 0, nil
+		}
+
+		return ret + 2, node
+	}
+
+	if len(data) > 4 && data[1] == c && data[2] == c && data[3] != c {
+		if c == '~' || isspace(data[3]) {
+			return 0, nil
+		}
+		ret, node := helperTripleEmphasis(p, data, 3, c)
+		if ret == 0 {
+			return 0, nil
+		}
+
+		return ret + 3, node
+	}
+
+	return 0, nil
+}
+
+func codeSpan(p *Markdown, data []byte, offset int) (int, *Node) {
+	data = data[offset:]
+
+	nb := 0
+
+	// count the number of backticks in the delimiter
+	for nb < len(data) && data[nb] == '`' {
+		nb++
+	}
+
+	// find the next delimiter
+	i, end := 0, 0
+	for end = nb; end < len(data) && i < nb; end++ {
+		if data[end] == '`' {
+			i++
+		} else {
+			i = 0
+		}
+	}
+
+	// no matching delimiter?
+	if i < nb && end >= len(data) {
+		return 0, nil
+	}
+
+	// trim outside whitespace
+	fBegin := nb
+	for fBegin < end && data[fBegin] == ' ' {
+		fBegin++
+	}
+
+	fEnd := end - nb
+	for fEnd > fBegin && data[fEnd-1] == ' ' {
+		fEnd--
+	}
+
+	// render the code span
+	if fBegin != fEnd {
+		code := NewNode(Code)
+		code.Literal = data[fBegin:fEnd]
+		return end, code
+	}
+
+	return end, nil
+}
+
+// newline preceded by two spaces becomes <br>
+func maybeLineBreak(p *Markdown, data []byte, offset int) (int, *Node) {
+	origOffset := offset
+	for offset < len(data) && data[offset] == ' ' {
+		offset++
+	}
+
+	if offset < len(data) && data[offset] == '\n' {
+		if offset-origOffset >= 2 {
+			return offset - origOffset + 1, NewNode(Hardbreak)
+		}
+		return offset - origOffset, nil
+	}
+	return 0, nil
+}
+
+// newline without two spaces works when HardLineBreak is enabled
+func lineBreak(p *Markdown, data []byte, offset int) (int, *Node) {
+	if p.extensions&HardLineBreak != 0 {
+		return 1, NewNode(Hardbreak)
+	}
+	return 0, nil
+}
+
+type linkType int
+
+const (
+	linkNormal linkType = iota
+	linkImg
+	linkDeferredFootnote
+	linkInlineFootnote
+)
+
+func isReferenceStyleLink(data []byte, pos int, t linkType) bool {
+	if t == linkDeferredFootnote {
+		return false
+	}
+	return pos < len(data)-1 && data[pos] == '[' && data[pos+1] != '^'
+}
+
+func maybeImage(p *Markdown, data []byte, offset int) (int, *Node) {
+	if offset < len(data)-1 && data[offset+1] == '[' {
+		return link(p, data, offset)
+	}
+	return 0, nil
+}
+
+func maybeInlineFootnote(p *Markdown, data []byte, offset int) (int, *Node) {
+	if offset < len(data)-1 && data[offset+1] == '[' {
+		return link(p, data, offset)
+	}
+	return 0, nil
+}
+
+// '[': parse a link or an image or a footnote
+func link(p *Markdown, data []byte, offset int) (int, *Node) {
+	// no links allowed inside regular links, footnote, and deferred footnotes
+	if p.insideLink && (offset > 0 && data[offset-1] == '[' || len(data)-1 > offset && data[offset+1] == '^') {
+		return 0, nil
+	}
+
+	var t linkType
+	switch {
+	// special case: ![^text] == deferred footnote (that follows something with
+	// an exclamation point)
+	case p.extensions&Footnotes != 0 && len(data)-1 > offset && data[offset+1] == '^':
+		t = linkDeferredFootnote
+	// ![alt] == image
+	case offset >= 0 && data[offset] == '!':
+		t = linkImg
+		offset++
+	// ^[text] == inline footnote
+	// [^refId] == deferred footnote
+	case p.extensions&Footnotes != 0:
+		if offset >= 0 && data[offset] == '^' {
+			t = linkInlineFootnote
+			offset++
+		} else if len(data)-1 > offset && data[offset+1] == '^' {
+			t = linkDeferredFootnote
+		}
+	// [text] == regular link
+	default:
+		t = linkNormal
+	}
+
+	data = data[offset:]
+
+	var (
+		i                       = 1
+		noteID                  int
+		title, link, altContent []byte
+		textHasNl               = false
+	)
+
+	if t == linkDeferredFootnote {
+		i++
+	}
+
+	// look for the matching closing bracket
+	for level := 1; level > 0 && i < len(data); i++ {
+		switch {
+		case data[i] == '\n':
+			textHasNl = true
+
+		case isBackslashEscaped(data, i):
+			continue
+
+		case data[i] == '[':
+			level++
+
+		case data[i] == ']':
+			level--
+			if level <= 0 {
+				i-- // compensate for extra i++ in for loop
+			}
+		}
+	}
+
+	if i >= len(data) {
+		return 0, nil
+	}
+
+	txtE := i
+	i++
+	var footnoteNode *Node
+
+	// skip any amount of whitespace or newline
+	// (this is much more lax than original markdown syntax)
+	for i < len(data) && isspace(data[i]) {
+		i++
+	}
+
+	// inline style link
+	switch {
+	case i < len(data) && data[i] == '(':
+		// skip initial whitespace
+		i++
+
+		for i < len(data) && isspace(data[i]) {
+			i++
+		}
+
+		linkB := i
+
+		// look for link end: ' " )
+	findlinkend:
+		for i < len(data) {
+			switch {
+			case data[i] == '\\':
+				i += 2
+
+			case data[i] == ')' || data[i] == '\'' || data[i] == '"':
+				break findlinkend
+
+			default:
+				i++
+			}
+		}
+
+		if i >= len(data) {
+			return 0, nil
+		}
+		linkE := i
+
+		// look for title end if present
+		titleB, titleE := 0, 0
+		if data[i] == '\'' || data[i] == '"' {
+			i++
+			titleB = i
+
+		findtitleend:
+			for i < len(data) {
+				switch {
+				case data[i] == '\\':
+					i += 2
+
+				case data[i] == ')':
+					break findtitleend
+
+				default:
+					i++
+				}
+			}
+
+			if i >= len(data) {
+				return 0, nil
+			}
+
+			// skip whitespace after title
+			titleE = i - 1
+			for titleE > titleB && isspace(data[titleE]) {
+				titleE--
+			}
+
+			// check for closing quote presence
+			if data[titleE] != '\'' && data[titleE] != '"' {
+				titleB, titleE = 0, 0
+				linkE = i
+			}
+		}
+
+		// remove whitespace at the end of the link
+		for linkE > linkB && isspace(data[linkE-1]) {
+			linkE--
+		}
+
+		// remove optional angle brackets around the link
+		if data[linkB] == '<' {
+			linkB++
+		}
+		if data[linkE-1] == '>' {
+			linkE--
+		}
+
+		// build escaped link and title
+		if linkE > linkB {
+			link = data[linkB:linkE]
+		}
+
+		if titleE > titleB {
+			title = data[titleB:titleE]
+		}
+
+		i++
+
+	// reference style link
+	case isReferenceStyleLink(data, i, t):
+		var id []byte
+		altContentConsidered := false
+
+		// look for the id
+		i++
+		linkB := i
+		for i < len(data) && data[i] != ']' {
+			i++
+		}
+		if i >= len(data) {
+			return 0, nil
+		}
+		linkE := i
+
+		// find the reference
+		if linkB == linkE {
+			if textHasNl {
+				var b bytes.Buffer
+
+				for j := 1; j < txtE; j++ {
+					switch {
+					case data[j] != '\n':
+						b.WriteByte(data[j])
+					case data[j-1] != ' ':
+						b.WriteByte(' ')
+					}
+				}
+
+				id = b.Bytes()
+			} else {
+				id = data[1:txtE]
+				altContentConsidered = true
+			}
+		} else {
+			id = data[linkB:linkE]
+		}
+
+		// find the reference with matching id
+		lr, ok := p.getRef(string(id))
+		if !ok {
+			return 0, nil
+		}
+
+		// keep link and title from reference
+		link = lr.link
+		title = lr.title
+		if altContentConsidered {
+			altContent = lr.text
+		}
+		i++
+
+	// shortcut reference style link or reference or inline footnote
+	default:
+		var id []byte
+
+		// craft the id
+		if textHasNl {
+			var b bytes.Buffer
+
+			for j := 1; j < txtE; j++ {
+				switch {
+				case data[j] != '\n':
+					b.WriteByte(data[j])
+				case data[j-1] != ' ':
+					b.WriteByte(' ')
+				}
+			}
+
+			id = b.Bytes()
+		} else {
+			if t == linkDeferredFootnote {
+				id = data[2:txtE] // get rid of the ^
+			} else {
+				id = data[1:txtE]
+			}
+		}
+
+		footnoteNode = NewNode(Item)
+		if t == linkInlineFootnote {
+			// create a new reference
+			noteID = len(p.notes) + 1
+
+			var fragment []byte
+			if len(id) > 0 {
+				if len(id) < 16 {
+					fragment = make([]byte, len(id))
+				} else {
+					fragment = make([]byte, 16)
+				}
+				copy(fragment, slugify(id))
+			} else {
+				fragment = append([]byte("footnote-"), []byte(strconv.Itoa(noteID))...)
+			}
+
+			ref := &reference{
+				noteID:   noteID,
+				hasBlock: false,
+				link:     fragment,
+				title:    id,
+				footnote: footnoteNode,
+			}
+
+			p.notes = append(p.notes, ref)
+
+			link = ref.link
+			title = ref.title
+		} else {
+			// find the reference with matching id
+			lr, ok := p.getRef(string(id))
+			if !ok {
+				return 0, nil
+			}
+
+			if t == linkDeferredFootnote {
+				lr.noteID = len(p.notes) + 1
+				lr.footnote = footnoteNode
+				p.notes = append(p.notes, lr)
+			}
+
+			// keep link and title from reference
+			link = lr.link
+			// if inline footnote, title == footnote contents
+			title = lr.title
+			noteID = lr.noteID
+		}
+
+		// rewind the whitespace
+		i = txtE + 1
+	}
+
+	var uLink []byte
+	if t == linkNormal || t == linkImg {
+		if len(link) > 0 {
+			var uLinkBuf bytes.Buffer
+			unescapeText(&uLinkBuf, link)
+			uLink = uLinkBuf.Bytes()
+		}
+
+		// links need something to click on and somewhere to go
+		if len(uLink) == 0 || (t == linkNormal && txtE <= 1) {
+			return 0, nil
+		}
+	}
+
+	// call the relevant rendering function
+	var linkNode *Node
+	switch t {
+	case linkNormal:
+		linkNode = NewNode(Link)
+		linkNode.Destination = normalizeURI(uLink)
+		linkNode.Title = title
+		if len(altContent) > 0 {
+			linkNode.AppendChild(text(altContent))
+		} else {
+			// links cannot contain other links, so turn off link parsing
+			// temporarily and recurse
+			insideLink := p.insideLink
+			p.insideLink = true
+			p.inline(linkNode, data[1:txtE])
+			p.insideLink = insideLink
+		}
+
+	case linkImg:
+		linkNode = NewNode(Image)
+		linkNode.Destination = uLink
+		linkNode.Title = title
+		linkNode.AppendChild(text(data[1:txtE]))
+		i++
+
+	case linkInlineFootnote, linkDeferredFootnote:
+		linkNode = NewNode(Link)
+		linkNode.Destination = link
+		linkNode.Title = title
+		linkNode.NoteID = noteID
+		linkNode.Footnote = footnoteNode
+		if t == linkInlineFootnote {
+			i++
+		}
+
+	default:
+		return 0, nil
+	}
+
+	return i, linkNode
+}
+
+func (p *Markdown) inlineHTMLComment(data []byte) int {
+	if len(data) < 5 {
+		return 0
+	}
+	if data[0] != '<' || data[1] != '!' || data[2] != '-' || data[3] != '-' {
+		return 0
+	}
+	i := 5
+	// scan for an end-of-comment marker, across lines if necessary
+	for i < len(data) && !(data[i-2] == '-' && data[i-1] == '-' && data[i] == '>') {
+		i++
+	}
+	// no end-of-comment marker
+	if i >= len(data) {
+		return 0
+	}
+	return i + 1
+}
+
+func stripMailto(link []byte) []byte {
+	if bytes.HasPrefix(link, []byte("mailto://")) {
+		return link[9:]
+	} else if bytes.HasPrefix(link, []byte("mailto:")) {
+		return link[7:]
+	} else {
+		return link
+	}
+}
+
+// autolinkType specifies a kind of autolink that gets detected.
+type autolinkType int
+
+// These are the possible flag values for the autolink renderer.
+const (
+	notAutolink autolinkType = iota
+	normalAutolink
+	emailAutolink
+)
+
+// '<' when tags or autolinks are allowed
+func leftAngle(p *Markdown, data []byte, offset int) (int, *Node) {
+	data = data[offset:]
+	altype, end := tagLength(data)
+	if size := p.inlineHTMLComment(data); size > 0 {
+		end = size
+	}
+	if end > 2 {
+		if altype != notAutolink {
+			var uLink bytes.Buffer
+			unescapeText(&uLink, data[1:end+1-2])
+			if uLink.Len() > 0 {
+				link := uLink.Bytes()
+				node := NewNode(Link)
+				node.Destination = link
+				if altype == emailAutolink {
+					node.Destination = append([]byte("mailto:"), link...)
+				}
+				node.AppendChild(text(stripMailto(link)))
+				return end, node
+			}
+		} else {
+			htmlTag := NewNode(HTMLSpan)
+			htmlTag.Literal = data[:end]
+			return end, htmlTag
+		}
+	}
+
+	return end, nil
+}
+
+// '\\' backslash escape
+var escapeChars = []byte("\\`*_{}[]()#+-.!:|&<>~")
+
+func escape(p *Markdown, data []byte, offset int) (int, *Node) {
+	data = data[offset:]
+
+	if len(data) > 1 {
+		if p.extensions&BackslashLineBreak != 0 && data[1] == '\n' {
+			return 2, NewNode(Hardbreak)
+		}
+		if bytes.IndexByte(escapeChars, data[1]) < 0 {
+			return 0, nil
+		}
+
+		return 2, text(data[1:2])
+	}
+
+	return 2, nil
+}
+
+func unescapeText(ob *bytes.Buffer, src []byte) {
+	i := 0
+	for i < len(src) {
+		org := i
+		for i < len(src) && src[i] != '\\' {
+			i++
+		}
+
+		if i > org {
+			ob.Write(src[org:i])
+		}
+
+		if i+1 >= len(src) {
+			break
+		}
+
+		ob.WriteByte(src[i+1])
+		i += 2
+	}
+}
+
+// '&' escaped when it doesn't belong to an entity
+// valid entities are assumed to be anything matching &#?[A-Za-z0-9]+;
+func entity(p *Markdown, data []byte, offset int) (int, *Node) {
+	data = data[offset:]
+
+	end := 1
+
+	if end < len(data) && data[end] == '#' {
+		end++
+	}
+
+	for end < len(data) && isalnum(data[end]) {
+		end++
+	}
+
+	if end < len(data) && data[end] == ';' {
+		end++ // real entity
+	} else {
+		return 0, nil // lone '&'
+	}
+
+	ent := data[:end]
+	// undo &amp; escaping or it will be converted to &amp;amp; by another
+	// escaper in the renderer
+	if bytes.Equal(ent, []byte("&amp;")) {
+		ent = []byte{'&'}
+	}
+
+	return end, text(ent)
+}
+
+func linkEndsWithEntity(data []byte, linkEnd int) bool {
+	entityRanges := htmlEntityRe.FindAllIndex(data[:linkEnd], -1)
+	return entityRanges != nil && entityRanges[len(entityRanges)-1][1] == linkEnd
+}
+
+// hasPrefixCaseInsensitive is a custom implementation of
+//     strings.HasPrefix(strings.ToLower(s), prefix)
+// we rolled our own because ToLower pulls in a huge machinery of lowercasing
+// anything from Unicode and that's very slow. Since this func will only be
+// used on ASCII protocol prefixes, we can take shortcuts.
+func hasPrefixCaseInsensitive(s, prefix []byte) bool {
+	if len(s) < len(prefix) {
+		return false
+	}
+	delta := byte('a' - 'A')
+	for i, b := range prefix {
+		if b != s[i] && b != s[i]+delta {
+			return false
+		}
+	}
+	return true
+}
+
+var protocolPrefixes = [][]byte{
+	[]byte("http://"),
+	[]byte("https://"),
+	[]byte("ftp://"),
+	[]byte("file://"),
+	[]byte("mailto:"),
+}
+
+const shortestPrefix = 6 // len("ftp://"), the shortest of the above
+
+func maybeAutoLink(p *Markdown, data []byte, offset int) (int, *Node) {
+	// quick check to rule out most false hits
+	if p.insideLink || len(data) < offset+shortestPrefix {
+		return 0, nil
+	}
+	for _, prefix := range protocolPrefixes {
+		endOfHead := offset + 8 // 8 is the len() of the longest prefix
+		if endOfHead > len(data) {
+			endOfHead = len(data)
+		}
+		if hasPrefixCaseInsensitive(data[offset:endOfHead], prefix) {
+			return autoLink(p, data, offset)
+		}
+	}
+	return 0, nil
+}
+
+func autoLink(p *Markdown, data []byte, offset int) (int, *Node) {
+	// Now a more expensive check to see if we're not inside an anchor element
+	anchorStart := offset
+	offsetFromAnchor := 0
+	for anchorStart > 0 && data[anchorStart] != '<' {
+		anchorStart--
+		offsetFromAnchor++
+	}
+
+	anchorStr := anchorRe.Find(data[anchorStart:])
+	if anchorStr != nil {
+		anchorClose := NewNode(HTMLSpan)
+		anchorClose.Literal = anchorStr[offsetFromAnchor:]
+		return len(anchorStr) - offsetFromAnchor, anchorClose
+	}
+
+	// scan backward for a word boundary
+	rewind := 0
+	for offset-rewind > 0 && rewind <= 7 && isletter(data[offset-rewind-1]) {
+		rewind++
+	}
+	if rewind > 6 { // longest supported protocol is "mailto" which has 6 letters
+		return 0, nil
+	}
+
+	origData := data
+	data = data[offset-rewind:]
+
+	if !isSafeLink(data) {
+		return 0, nil
+	}
+
+	linkEnd := 0
+	for linkEnd < len(data) && !isEndOfLink(data[linkEnd]) {
+		linkEnd++
+	}
+
+	// Skip punctuation at the end of the link
+	if (data[linkEnd-1] == '.' || data[linkEnd-1] == ',') && data[linkEnd-2] != '\\' {
+		linkEnd--
+	}
+
+	// But don't skip semicolon if it's a part of escaped entity:
+	if data[linkEnd-1] == ';' && data[linkEnd-2] != '\\' && !linkEndsWithEntity(data, linkEnd) {
+		linkEnd--
+	}
+
+	// See if the link finishes with a punctuation sign that can be closed.
+	var copen byte
+	switch data[linkEnd-1] {
+	case '"':
+		copen = '"'
+	case '\'':
+		copen = '\''
+	case ')':
+		copen = '('
+	case ']':
+		copen = '['
+	case '}':
+		copen = '{'
+	default:
+		copen = 0
+	}
+
+	if copen != 0 {
+		bufEnd := offset - rewind + linkEnd - 2
+
+		openDelim := 1
+
+		/* Try to close the final punctuation sign in this same line;
+		 * if we managed to close it outside of the URL, that means that it's
+		 * not part of the URL. If it closes inside the URL, that means it
+		 * is part of the URL.
+		 *
+		 * Examples:
+		 *
+		 *      foo http://www.pokemon.com/Pikachu_(Electric) bar
+		 *              => http://www.pokemon.com/Pikachu_(Electric)
+		 *
+		 *      foo (http://www.pokemon.com/Pikachu_(Electric)) bar
+		 *              => http://www.pokemon.com/Pikachu_(Electric)
+		 *
+		 *      foo http://www.pokemon.com/Pikachu_(Electric)) bar
+		 *              => http://www.pokemon.com/Pikachu_(Electric))
+		 *
+		 *      (foo http://www.pokemon.com/Pikachu_(Electric)) bar
+		 *              => foo http://www.pokemon.com/Pikachu_(Electric)
+		 */
+
+		for bufEnd >= 0 && origData[bufEnd] != '\n' && openDelim != 0 {
+			if origData[bufEnd] == data[linkEnd-1] {
+				openDelim++
+			}
+
+			if origData[bufEnd] == copen {
+				openDelim--
+			}
+
+			bufEnd--
+		}
+
+		if openDelim == 0 {
+			linkEnd--
+		}
+	}
+
+	var uLink bytes.Buffer
+	unescapeText(&uLink, data[:linkEnd])
+
+	if uLink.Len() > 0 {
+		node := NewNode(Link)
+		node.Destination = uLink.Bytes()
+		node.AppendChild(text(uLink.Bytes()))
+		return linkEnd, node
+	}
+
+	return linkEnd, nil
+}
+
+func isEndOfLink(char byte) bool {
+	return isspace(char) || char == '<'
+}
+
+var validUris = [][]byte{[]byte("http://"), []byte("https://"), []byte("ftp://"), []byte("mailto://")}
+var validPaths = [][]byte{[]byte("/"), []byte("./"), []byte("../")}
+
+func isSafeLink(link []byte) bool {
+	for _, path := range validPaths {
+		if len(link) >= len(path) && bytes.Equal(link[:len(path)], path) {
+			if len(link) == len(path) {
+				return true
+			} else if isalnum(link[len(path)]) {
+				return true
+			}
+		}
+	}
+
+	for _, prefix := range validUris {
+		// TODO: handle unicode here
+		// case-insensitive prefix test
+		if len(link) > len(prefix) && bytes.Equal(bytes.ToLower(link[:len(prefix)]), prefix) && isalnum(link[len(prefix)]) {
+			return true
+		}
+	}
+
+	return false
+}
+
+// return the length of the given tag, or 0 is it's not valid
+func tagLength(data []byte) (autolink autolinkType, end int) {
+	var i, j int
+
+	// a valid tag can't be shorter than 3 chars
+	if len(data) < 3 {
+		return notAutolink, 0
+	}
+
+	// begins with a '<' optionally followed by '/', followed by letter or number
+	if data[0] != '<' {
+		return notAutolink, 0
+	}
+	if data[1] == '/' {
+		i = 2
+	} else {
+		i = 1
+	}
+
+	if !isalnum(data[i]) {
+		return notAutolink, 0
+	}
+
+	// scheme test
+	autolink = notAutolink
+
+	// try to find the beginning of an URI
+	for i < len(data) && (isalnum(data[i]) || data[i] == '.' || data[i] == '+' || data[i] == '-') {
+		i++
+	}
+
+	if i > 1 && i < len(data) && data[i] == '@' {
+		if j = isMailtoAutoLink(data[i:]); j != 0 {
+			return emailAutolink, i + j
+		}
+	}
+
+	if i > 2 && i < len(data) && data[i] == ':' {
+		autolink = normalAutolink
+		i++
+	}
+
+	// complete autolink test: no whitespace or ' or "
+	switch {
+	case i >= len(data):
+		autolink = notAutolink
+	case autolink != notAutolink:
+		j = i
+
+		for i < len(data) {
+			if data[i] == '\\' {
+				i += 2
+			} else if data[i] == '>' || data[i] == '\'' || data[i] == '"' || isspace(data[i]) {
+				break
+			} else {
+				i++
+			}
+
+		}
+
+		if i >= len(data) {
+			return autolink, 0
+		}
+		if i > j && data[i] == '>' {
+			return autolink, i + 1
+		}
+
+		// one of the forbidden chars has been found
+		autolink = notAutolink
+	}
+	i += bytes.IndexByte(data[i:], '>')
+	if i < 0 {
+		return autolink, 0
+	}
+	return autolink, i + 1
+}
+
+// look for the address part of a mail autolink and '>'
+// this is less strict than the original markdown e-mail address matching
+func isMailtoAutoLink(data []byte) int {
+	nb := 0
+
+	// address is assumed to be: [-@._a-zA-Z0-9]+ with exactly one '@'
+	for i := 0; i < len(data); i++ {
+		if isalnum(data[i]) {
+			continue
+		}
+
+		switch data[i] {
+		case '@':
+			nb++
+
+		case '-', '.', '_':
+			break
+
+		case '>':
+			if nb == 1 {
+				return i + 1
+			}
+			return 0
+		default:
+			return 0
+		}
+	}
+
+	return 0
+}
+
+// look for the next emph char, skipping other constructs
+func helperFindEmphChar(data []byte, c byte) int {
+	i := 0
+
+	for i < len(data) {
+		for i < len(data) && data[i] != c && data[i] != '`' && data[i] != '[' {
+			i++
+		}
+		if i >= len(data) {
+			return 0
+		}
+		// do not count escaped chars
+		if i != 0 && data[i-1] == '\\' {
+			i++
+			continue
+		}
+		if data[i] == c {
+			return i
+		}
+
+		if data[i] == '`' {
+			// skip a code span
+			tmpI := 0
+			i++
+			for i < len(data) && data[i] != '`' {
+				if tmpI == 0 && data[i] == c {
+					tmpI = i
+				}
+				i++
+			}
+			if i >= len(data) {
+				return tmpI
+			}
+			i++
+		} else if data[i] == '[' {
+			// skip a link
+			tmpI := 0
+			i++
+			for i < len(data) && data[i] != ']' {
+				if tmpI == 0 && data[i] == c {
+					tmpI = i
+				}
+				i++
+			}
+			i++
+			for i < len(data) && (data[i] == ' ' || data[i] == '\n') {
+				i++
+			}
+			if i >= len(data) {
+				return tmpI
+			}
+			if data[i] != '[' && data[i] != '(' { // not a link
+				if tmpI > 0 {
+					return tmpI
+				}
+				continue
+			}
+			cc := data[i]
+			i++
+			for i < len(data) && data[i] != cc {
+				if tmpI == 0 && data[i] == c {
+					return i
+				}
+				i++
+			}
+			if i >= len(data) {
+				return tmpI
+			}
+			i++
+		}
+	}
+	return 0
+}
+
+func helperEmphasis(p *Markdown, data []byte, c byte) (int, *Node) {
+	i := 0
+
+	// skip one symbol if coming from emph3
+	if len(data) > 1 && data[0] == c && data[1] == c {
+		i = 1
+	}
+
+	for i < len(data) {
+		length := helperFindEmphChar(data[i:], c)
+		if length == 0 {
+			return 0, nil
+		}
+		i += length
+		if i >= len(data) {
+			return 0, nil
+		}
+
+		if i+1 < len(data) && data[i+1] == c {
+			i++
+			continue
+		}
+
+		if data[i] == c && !isspace(data[i-1]) {
+
+			if p.extensions&NoIntraEmphasis != 0 {
+				if !(i+1 == len(data) || isspace(data[i+1]) || ispunct(data[i+1])) {
+					continue
+				}
+			}
+
+			emph := NewNode(Emph)
+			p.inline(emph, data[:i])
+			return i + 1, emph
+		}
+	}
+
+	return 0, nil
+}
+
+func helperDoubleEmphasis(p *Markdown, data []byte, c byte) (int, *Node) {
+	i := 0
+
+	for i < len(data) {
+		length := helperFindEmphChar(data[i:], c)
+		if length == 0 {
+			return 0, nil
+		}
+		i += length
+
+		if i+1 < len(data) && data[i] == c && data[i+1] == c && i > 0 && !isspace(data[i-1]) {
+			nodeType := Strong
+			if c == '~' {
+				nodeType = Del
+			}
+			node := NewNode(nodeType)
+			p.inline(node, data[:i])
+			return i + 2, node
+		}
+		i++
+	}
+	return 0, nil
+}
+
+func helperTripleEmphasis(p *Markdown, data []byte, offset int, c byte) (int, *Node) {
+	i := 0
+	origData := data
+	data = data[offset:]
+
+	for i < len(data) {
+		length := helperFindEmphChar(data[i:], c)
+		if length == 0 {
+			return 0, nil
+		}
+		i += length
+
+		// skip whitespace preceded symbols
+		if data[i] != c || isspace(data[i-1]) {
+			continue
+		}
+
+		switch {
+		case i+2 < len(data) && data[i+1] == c && data[i+2] == c:
+			// triple symbol found
+			strong := NewNode(Strong)
+			em := NewNode(Emph)
+			strong.AppendChild(em)
+			p.inline(em, data[:i])
+			return i + 3, strong
+		case (i+1 < len(data) && data[i+1] == c):
+			// double symbol found, hand over to emph1
+			length, node := helperEmphasis(p, origData[offset-2:], c)
+			if length == 0 {
+				return 0, nil
+			}
+			return length - 2, node
+		default:
+			// single symbol found, hand over to emph2
+			length, node := helperDoubleEmphasis(p, origData[offset-1:], c)
+			if length == 0 {
+				return 0, nil
+			}
+			return length - 1, node
+		}
+	}
+	return 0, nil
+}
+
+func text(s []byte) *Node {
+	node := NewNode(Text)
+	node.Literal = s
+	return node
+}
+
+func normalizeURI(s []byte) []byte {
+	return s // TODO: implement
+}
diff --git a/vendor/github.com/russross/blackfriday/v2/markdown.go b/vendor/github.com/russross/blackfriday/v2/markdown.go
new file mode 100644
index 0000000..58d2e45
--- /dev/null
+++ b/vendor/github.com/russross/blackfriday/v2/markdown.go
@@ -0,0 +1,950 @@
+// Blackfriday Markdown Processor
+// Available at http://github.com/russross/blackfriday
+//
+// Copyright © 2011 Russ Ross <russ@russross.com>.
+// Distributed under the Simplified BSD License.
+// See README.md for details.
+
+package blackfriday
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"strings"
+	"unicode/utf8"
+)
+
+//
+// Markdown parsing and processing
+//
+
+// Version string of the package. Appears in the rendered document when
+// CompletePage flag is on.
+const Version = "2.0"
+
+// Extensions is a bitwise or'ed collection of enabled Blackfriday's
+// extensions.
+type Extensions int
+
+// These are the supported markdown parsing extensions.
+// OR these values together to select multiple extensions.
+const (
+	NoExtensions           Extensions = 0
+	NoIntraEmphasis        Extensions = 1 << iota // Ignore emphasis markers inside words
+	Tables                                        // Render tables
+	FencedCode                                    // Render fenced code blocks
+	Autolink                                      // Detect embedded URLs that are not explicitly marked
+	Strikethrough                                 // Strikethrough text using ~~test~~
+	LaxHTMLBlocks                                 // Loosen up HTML block parsing rules
+	SpaceHeadings                                 // Be strict about prefix heading rules
+	HardLineBreak                                 // Translate newlines into line breaks
+	TabSizeEight                                  // Expand tabs to eight spaces instead of four
+	Footnotes                                     // Pandoc-style footnotes
+	NoEmptyLineBeforeBlock                        // No need to insert an empty line to start a (code, quote, ordered list, unordered list) block
+	HeadingIDs                                    // specify heading IDs  with {#id}
+	Titleblock                                    // Titleblock ala pandoc
+	AutoHeadingIDs                                // Create the heading ID from the text
+	BackslashLineBreak                            // Translate trailing backslashes into line breaks
+	DefinitionLists                               // Render definition lists
+
+	CommonHTMLFlags HTMLFlags = UseXHTML | Smartypants |
+		SmartypantsFractions | SmartypantsDashes | SmartypantsLatexDashes
+
+	CommonExtensions Extensions = NoIntraEmphasis | Tables | FencedCode |
+		Autolink | Strikethrough | SpaceHeadings | HeadingIDs |
+		BackslashLineBreak | DefinitionLists
+)
+
+// ListType contains bitwise or'ed flags for list and list item objects.
+type ListType int
+
+// These are the possible flag values for the ListItem renderer.
+// Multiple flag values may be ORed together.
+// These are mostly of interest if you are writing a new output format.
+const (
+	ListTypeOrdered ListType = 1 << iota
+	ListTypeDefinition
+	ListTypeTerm
+
+	ListItemContainsBlock
+	ListItemBeginningOfList // TODO: figure out if this is of any use now
+	ListItemEndOfList
+)
+
+// CellAlignFlags holds a type of alignment in a table cell.
+type CellAlignFlags int
+
+// These are the possible flag values for the table cell renderer.
+// Only a single one of these values will be used; they are not ORed together.
+// These are mostly of interest if you are writing a new output format.
+const (
+	TableAlignmentLeft CellAlignFlags = 1 << iota
+	TableAlignmentRight
+	TableAlignmentCenter = (TableAlignmentLeft | TableAlignmentRight)
+)
+
+// The size of a tab stop.
+const (
+	TabSizeDefault = 4
+	TabSizeDouble  = 8
+)
+
+// blockTags is a set of tags that are recognized as HTML block tags.
+// Any of these can be included in markdown text without special escaping.
+var blockTags = map[string]struct{}{
+	"blockquote": {},
+	"del":        {},
+	"div":        {},
+	"dl":         {},
+	"fieldset":   {},
+	"form":       {},
+	"h1":         {},
+	"h2":         {},
+	"h3":         {},
+	"h4":         {},
+	"h5":         {},
+	"h6":         {},
+	"iframe":     {},
+	"ins":        {},
+	"math":       {},
+	"noscript":   {},
+	"ol":         {},
+	"pre":        {},
+	"p":          {},
+	"script":     {},
+	"style":      {},
+	"table":      {},
+	"ul":         {},
+
+	// HTML5
+	"address":    {},
+	"article":    {},
+	"aside":      {},
+	"canvas":     {},
+	"figcaption": {},
+	"figure":     {},
+	"footer":     {},
+	"header":     {},
+	"hgroup":     {},
+	"main":       {},
+	"nav":        {},
+	"output":     {},
+	"progress":   {},
+	"section":    {},
+	"video":      {},
+}
+
+// Renderer is the rendering interface. This is mostly of interest if you are
+// implementing a new rendering format.
+//
+// Only an HTML implementation is provided in this repository, see the README
+// for external implementations.
+type Renderer interface {
+	// RenderNode is the main rendering method. It will be called once for
+	// every leaf node and twice for every non-leaf node (first with
+	// entering=true, then with entering=false). The method should write its
+	// rendition of the node to the supplied writer w.
+	RenderNode(w io.Writer, node *Node, entering bool) WalkStatus
+
+	// RenderHeader is a method that allows the renderer to produce some
+	// content preceding the main body of the output document. The header is
+	// understood in the broad sense here. For example, the default HTML
+	// renderer will write not only the HTML document preamble, but also the
+	// table of contents if it was requested.
+	//
+	// The method will be passed an entire document tree, in case a particular
+	// implementation needs to inspect it to produce output.
+	//
+	// The output should be written to the supplied writer w. If your
+	// implementation has no header to write, supply an empty implementation.
+	RenderHeader(w io.Writer, ast *Node)
+
+	// RenderFooter is a symmetric counterpart of RenderHeader.
+	RenderFooter(w io.Writer, ast *Node)
+}
+
+// Callback functions for inline parsing. One such function is defined
+// for each character that triggers a response when parsing inline data.
+type inlineParser func(p *Markdown, data []byte, offset int) (int, *Node)
+
+// Markdown is a type that holds extensions and the runtime state used by
+// Parse, and the renderer. You can not use it directly, construct it with New.
+type Markdown struct {
+	renderer          Renderer
+	referenceOverride ReferenceOverrideFunc
+	refs              map[string]*reference
+	inlineCallback    [256]inlineParser
+	extensions        Extensions
+	nesting           int
+	maxNesting        int
+	insideLink        bool
+
+	// Footnotes need to be ordered as well as available to quickly check for
+	// presence. If a ref is also a footnote, it's stored both in refs and here
+	// in notes. Slice is nil if footnotes not enabled.
+	notes []*reference
+
+	doc                  *Node
+	tip                  *Node // = doc
+	oldTip               *Node
+	lastMatchedContainer *Node // = doc
+	allClosed            bool
+}
+
+func (p *Markdown) getRef(refid string) (ref *reference, found bool) {
+	if p.referenceOverride != nil {
+		r, overridden := p.referenceOverride(refid)
+		if overridden {
+			if r == nil {
+				return nil, false
+			}
+			return &reference{
+				link:     []byte(r.Link),
+				title:    []byte(r.Title),
+				noteID:   0,
+				hasBlock: false,
+				text:     []byte(r.Text)}, true
+		}
+	}
+	// refs are case insensitive
+	ref, found = p.refs[strings.ToLower(refid)]
+	return ref, found
+}
+
+func (p *Markdown) finalize(block *Node) {
+	above := block.Parent
+	block.open = false
+	p.tip = above
+}
+
+func (p *Markdown) addChild(node NodeType, offset uint32) *Node {
+	return p.addExistingChild(NewNode(node), offset)
+}
+
+func (p *Markdown) addExistingChild(node *Node, offset uint32) *Node {
+	for !p.tip.canContain(node.Type) {
+		p.finalize(p.tip)
+	}
+	p.tip.AppendChild(node)
+	p.tip = node
+	return node
+}
+
+func (p *Markdown) closeUnmatchedBlocks() {
+	if !p.allClosed {
+		for p.oldTip != p.lastMatchedContainer {
+			parent := p.oldTip.Parent
+			p.finalize(p.oldTip)
+			p.oldTip = parent
+		}
+		p.allClosed = true
+	}
+}
+
+//
+//
+// Public interface
+//
+//
+
+// Reference represents the details of a link.
+// See the documentation in Options for more details on use-case.
+type Reference struct {
+	// Link is usually the URL the reference points to.
+	Link string
+	// Title is the alternate text describing the link in more detail.
+	Title string
+	// Text is the optional text to override the ref with if the syntax used was
+	// [refid][]
+	Text string
+}
+
+// ReferenceOverrideFunc is expected to be called with a reference string and
+// return either a valid Reference type that the reference string maps to or
+// nil. If overridden is false, the default reference logic will be executed.
+// See the documentation in Options for more details on use-case.
+type ReferenceOverrideFunc func(reference string) (ref *Reference, overridden bool)
+
+// New constructs a Markdown processor. You can use the same With* functions as
+// for Run() to customize parser's behavior and the renderer.
+func New(opts ...Option) *Markdown {
+	var p Markdown
+	for _, opt := range opts {
+		opt(&p)
+	}
+	p.refs = make(map[string]*reference)
+	p.maxNesting = 16
+	p.insideLink = false
+	docNode := NewNode(Document)
+	p.doc = docNode
+	p.tip = docNode
+	p.oldTip = docNode
+	p.lastMatchedContainer = docNode
+	p.allClosed = true
+	// register inline parsers
+	p.inlineCallback[' '] = maybeLineBreak
+	p.inlineCallback['*'] = emphasis
+	p.inlineCallback['_'] = emphasis
+	if p.extensions&Strikethrough != 0 {
+		p.inlineCallback['~'] = emphasis
+	}
+	p.inlineCallback['`'] = codeSpan
+	p.inlineCallback['\n'] = lineBreak
+	p.inlineCallback['['] = link
+	p.inlineCallback['<'] = leftAngle
+	p.inlineCallback['\\'] = escape
+	p.inlineCallback['&'] = entity
+	p.inlineCallback['!'] = maybeImage
+	p.inlineCallback['^'] = maybeInlineFootnote
+	if p.extensions&Autolink != 0 {
+		p.inlineCallback['h'] = maybeAutoLink
+		p.inlineCallback['m'] = maybeAutoLink
+		p.inlineCallback['f'] = maybeAutoLink
+		p.inlineCallback['H'] = maybeAutoLink
+		p.inlineCallback['M'] = maybeAutoLink
+		p.inlineCallback['F'] = maybeAutoLink
+	}
+	if p.extensions&Footnotes != 0 {
+		p.notes = make([]*reference, 0)
+	}
+	return &p
+}
+
+// Option customizes the Markdown processor's default behavior.
+type Option func(*Markdown)
+
+// WithRenderer allows you to override the default renderer.
+func WithRenderer(r Renderer) Option {
+	return func(p *Markdown) {
+		p.renderer = r
+	}
+}
+
+// WithExtensions allows you to pick some of the many extensions provided by
+// Blackfriday. You can bitwise OR them.
+func WithExtensions(e Extensions) Option {
+	return func(p *Markdown) {
+		p.extensions = e
+	}
+}
+
+// WithNoExtensions turns off all extensions and custom behavior.
+func WithNoExtensions() Option {
+	return func(p *Markdown) {
+		p.extensions = NoExtensions
+		p.renderer = NewHTMLRenderer(HTMLRendererParameters{
+			Flags: HTMLFlagsNone,
+		})
+	}
+}
+
+// WithRefOverride sets an optional function callback that is called every
+// time a reference is resolved.
+//
+// In Markdown, the link reference syntax can be made to resolve a link to
+// a reference instead of an inline URL, in one of the following ways:
+//
+//  * [link text][refid]
+//  * [refid][]
+//
+// Usually, the refid is defined at the bottom of the Markdown document. If
+// this override function is provided, the refid is passed to the override
+// function first, before consulting the defined refids at the bottom. If
+// the override function indicates an override did not occur, the refids at
+// the bottom will be used to fill in the link details.
+func WithRefOverride(o ReferenceOverrideFunc) Option {
+	return func(p *Markdown) {
+		p.referenceOverride = o
+	}
+}
+
+// Run is the main entry point to Blackfriday. It parses and renders a
+// block of markdown-encoded text.
+//
+// The simplest invocation of Run takes one argument, input:
+//     output := Run(input)
+// This will parse the input with CommonExtensions enabled and render it with
+// the default HTMLRenderer (with CommonHTMLFlags).
+//
+// Variadic arguments opts can customize the default behavior. Since Markdown
+// type does not contain exported fields, you can not use it directly. Instead,
+// use the With* functions. For example, this will call the most basic
+// functionality, with no extensions:
+//     output := Run(input, WithNoExtensions())
+//
+// You can use any number of With* arguments, even contradicting ones. They
+// will be applied in order of appearance and the latter will override the
+// former:
+//     output := Run(input, WithNoExtensions(), WithExtensions(exts),
+//         WithRenderer(yourRenderer))
+func Run(input []byte, opts ...Option) []byte {
+	r := NewHTMLRenderer(HTMLRendererParameters{
+		Flags: CommonHTMLFlags,
+	})
+	optList := []Option{WithRenderer(r), WithExtensions(CommonExtensions)}
+	optList = append(optList, opts...)
+	parser := New(optList...)
+	ast := parser.Parse(input)
+	var buf bytes.Buffer
+	parser.renderer.RenderHeader(&buf, ast)
+	ast.Walk(func(node *Node, entering bool) WalkStatus {
+		return parser.renderer.RenderNode(&buf, node, entering)
+	})
+	parser.renderer.RenderFooter(&buf, ast)
+	return buf.Bytes()
+}
+
+// Parse is an entry point to the parsing part of Blackfriday. It takes an
+// input markdown document and produces a syntax tree for its contents. This
+// tree can then be rendered with a default or custom renderer, or
+// analyzed/transformed by the caller to whatever non-standard needs they have.
+// The return value is the root node of the syntax tree.
+func (p *Markdown) Parse(input []byte) *Node {
+	p.block(input)
+	// Walk the tree and finish up some of unfinished blocks
+	for p.tip != nil {
+		p.finalize(p.tip)
+	}
+	// Walk the tree again and process inline markdown in each block
+	p.doc.Walk(func(node *Node, entering bool) WalkStatus {
+		if node.Type == Paragraph || node.Type == Heading || node.Type == TableCell {
+			p.inline(node, node.content)
+			node.content = nil
+		}
+		return GoToNext
+	})
+	p.parseRefsToAST()
+	return p.doc
+}
+
+func (p *Markdown) parseRefsToAST() {
+	if p.extensions&Footnotes == 0 || len(p.notes) == 0 {
+		return
+	}
+	p.tip = p.doc
+	block := p.addBlock(List, nil)
+	block.IsFootnotesList = true
+	block.ListFlags = ListTypeOrdered
+	flags := ListItemBeginningOfList
+	// Note: this loop is intentionally explicit, not range-form. This is
+	// because the body of the loop will append nested footnotes to p.notes and
+	// we need to process those late additions. Range form would only walk over
+	// the fixed initial set.
+	for i := 0; i < len(p.notes); i++ {
+		ref := p.notes[i]
+		p.addExistingChild(ref.footnote, 0)
+		block := ref.footnote
+		block.ListFlags = flags | ListTypeOrdered
+		block.RefLink = ref.link
+		if ref.hasBlock {
+			flags |= ListItemContainsBlock
+			p.block(ref.title)
+		} else {
+			p.inline(block, ref.title)
+		}
+		flags &^= ListItemBeginningOfList | ListItemContainsBlock
+	}
+	above := block.Parent
+	finalizeList(block)
+	p.tip = above
+	block.Walk(func(node *Node, entering bool) WalkStatus {
+		if node.Type == Paragraph || node.Type == Heading {
+			p.inline(node, node.content)
+			node.content = nil
+		}
+		return GoToNext
+	})
+}
+
+//
+// Link references
+//
+// This section implements support for references that (usually) appear
+// as footnotes in a document, and can be referenced anywhere in the document.
+// The basic format is:
+//
+//    [1]: http://www.google.com/ "Google"
+//    [2]: http://www.github.com/ "Github"
+//
+// Anywhere in the document, the reference can be linked by referring to its
+// label, i.e., 1 and 2 in this example, as in:
+//
+//    This library is hosted on [Github][2], a git hosting site.
+//
+// Actual footnotes as specified in Pandoc and supported by some other Markdown
+// libraries such as php-markdown are also taken care of. They look like this:
+//
+//    This sentence needs a bit of further explanation.[^note]
+//
+//    [^note]: This is the explanation.
+//
+// Footnotes should be placed at the end of the document in an ordered list.
+// Finally, there are inline footnotes such as:
+//
+//    Inline footnotes^[Also supported.] provide a quick inline explanation,
+//    but are rendered at the bottom of the document.
+//
+
+// reference holds all information necessary for a reference-style links or
+// footnotes.
+//
+// Consider this markdown with reference-style links:
+//
+//     [link][ref]
+//
+//     [ref]: /url/ "tooltip title"
+//
+// It will be ultimately converted to this HTML:
+//
+//     <p><a href=\"/url/\" title=\"title\">link</a></p>
+//
+// And a reference structure will be populated as follows:
+//
+//     p.refs["ref"] = &reference{
+//         link: "/url/",
+//         title: "tooltip title",
+//     }
+//
+// Alternatively, reference can contain information about a footnote. Consider
+// this markdown:
+//
+//     Text needing a footnote.[^a]
+//
+//     [^a]: This is the note
+//
+// A reference structure will be populated as follows:
+//
+//     p.refs["a"] = &reference{
+//         link: "a",
+//         title: "This is the note",
+//         noteID: <some positive int>,
+//     }
+//
+// TODO: As you can see, it begs for splitting into two dedicated structures
+// for refs and for footnotes.
+type reference struct {
+	link     []byte
+	title    []byte
+	noteID   int // 0 if not a footnote ref
+	hasBlock bool
+	footnote *Node // a link to the Item node within a list of footnotes
+
+	text []byte // only gets populated by refOverride feature with Reference.Text
+}
+
+func (r *reference) String() string {
+	return fmt.Sprintf("{link: %q, title: %q, text: %q, noteID: %d, hasBlock: %v}",
+		r.link, r.title, r.text, r.noteID, r.hasBlock)
+}
+
+// Check whether or not data starts with a reference link.
+// If so, it is parsed and stored in the list of references
+// (in the render struct).
+// Returns the number of bytes to skip to move past it,
+// or zero if the first line is not a reference.
+func isReference(p *Markdown, data []byte, tabSize int) int {
+	// up to 3 optional leading spaces
+	if len(data) < 4 {
+		return 0
+	}
+	i := 0
+	for i < 3 && data[i] == ' ' {
+		i++
+	}
+
+	noteID := 0
+
+	// id part: anything but a newline between brackets
+	if data[i] != '[' {
+		return 0
+	}
+	i++
+	if p.extensions&Footnotes != 0 {
+		if i < len(data) && data[i] == '^' {
+			// we can set it to anything here because the proper noteIds will
+			// be assigned later during the second pass. It just has to be != 0
+			noteID = 1
+			i++
+		}
+	}
+	idOffset := i
+	for i < len(data) && data[i] != '\n' && data[i] != '\r' && data[i] != ']' {
+		i++
+	}
+	if i >= len(data) || data[i] != ']' {
+		return 0
+	}
+	idEnd := i
+	// footnotes can have empty ID, like this: [^], but a reference can not be
+	// empty like this: []. Break early if it's not a footnote and there's no ID
+	if noteID == 0 && idOffset == idEnd {
+		return 0
+	}
+	// spacer: colon (space | tab)* newline? (space | tab)*
+	i++
+	if i >= len(data) || data[i] != ':' {
+		return 0
+	}
+	i++
+	for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
+		i++
+	}
+	if i < len(data) && (data[i] == '\n' || data[i] == '\r') {
+		i++
+		if i < len(data) && data[i] == '\n' && data[i-1] == '\r' {
+			i++
+		}
+	}
+	for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
+		i++
+	}
+	if i >= len(data) {
+		return 0
+	}
+
+	var (
+		linkOffset, linkEnd   int
+		titleOffset, titleEnd int
+		lineEnd               int
+		raw                   []byte
+		hasBlock              bool
+	)
+
+	if p.extensions&Footnotes != 0 && noteID != 0 {
+		linkOffset, linkEnd, raw, hasBlock = scanFootnote(p, data, i, tabSize)
+		lineEnd = linkEnd
+	} else {
+		linkOffset, linkEnd, titleOffset, titleEnd, lineEnd = scanLinkRef(p, data, i)
+	}
+	if lineEnd == 0 {
+		return 0
+	}
+
+	// a valid ref has been found
+
+	ref := &reference{
+		noteID:   noteID,
+		hasBlock: hasBlock,
+	}
+
+	if noteID > 0 {
+		// reusing the link field for the id since footnotes don't have links
+		ref.link = data[idOffset:idEnd]
+		// if footnote, it's not really a title, it's the contained text
+		ref.title = raw
+	} else {
+		ref.link = data[linkOffset:linkEnd]
+		ref.title = data[titleOffset:titleEnd]
+	}
+
+	// id matches are case-insensitive
+	id := string(bytes.ToLower(data[idOffset:idEnd]))
+
+	p.refs[id] = ref
+
+	return lineEnd
+}
+
+func scanLinkRef(p *Markdown, data []byte, i int) (linkOffset, linkEnd, titleOffset, titleEnd, lineEnd int) {
+	// link: whitespace-free sequence, optionally between angle brackets
+	if data[i] == '<' {
+		i++
+	}
+	linkOffset = i
+	for i < len(data) && data[i] != ' ' && data[i] != '\t' && data[i] != '\n' && data[i] != '\r' {
+		i++
+	}
+	linkEnd = i
+	if data[linkOffset] == '<' && data[linkEnd-1] == '>' {
+		linkOffset++
+		linkEnd--
+	}
+
+	// optional spacer: (space | tab)* (newline | '\'' | '"' | '(' )
+	for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
+		i++
+	}
+	if i < len(data) && data[i] != '\n' && data[i] != '\r' && data[i] != '\'' && data[i] != '"' && data[i] != '(' {
+		return
+	}
+
+	// compute end-of-line
+	if i >= len(data) || data[i] == '\r' || data[i] == '\n' {
+		lineEnd = i
+	}
+	if i+1 < len(data) && data[i] == '\r' && data[i+1] == '\n' {
+		lineEnd++
+	}
+
+	// optional (space|tab)* spacer after a newline
+	if lineEnd > 0 {
+		i = lineEnd + 1
+		for i < len(data) && (data[i] == ' ' || data[i] == '\t') {
+			i++
+		}
+	}
+
+	// optional title: any non-newline sequence enclosed in '"() alone on its line
+	if i+1 < len(data) && (data[i] == '\'' || data[i] == '"' || data[i] == '(') {
+		i++
+		titleOffset = i
+
+		// look for EOL
+		for i < len(data) && data[i] != '\n' && data[i] != '\r' {
+			i++
+		}
+		if i+1 < len(data) && data[i] == '\n' && data[i+1] == '\r' {
+			titleEnd = i + 1
+		} else {
+			titleEnd = i
+		}
+
+		// step back
+		i--
+		for i > titleOffset && (data[i] == ' ' || data[i] == '\t') {
+			i--
+		}
+		if i > titleOffset && (data[i] == '\'' || data[i] == '"' || data[i] == ')') {
+			lineEnd = titleEnd
+			titleEnd = i
+		}
+	}
+
+	return
+}
+
+// The first bit of this logic is the same as Parser.listItem, but the rest
+// is much simpler. This function simply finds the entire block and shifts it
+// over by one tab if it is indeed a block (just returns the line if it's not).
+// blockEnd is the end of the section in the input buffer, and contents is the
+// extracted text that was shifted over one tab. It will need to be rendered at
+// the end of the document.
+func scanFootnote(p *Markdown, data []byte, i, indentSize int) (blockStart, blockEnd int, contents []byte, hasBlock bool) {
+	if i == 0 || len(data) == 0 {
+		return
+	}
+
+	// skip leading whitespace on first line
+	for i < len(data) && data[i] == ' ' {
+		i++
+	}
+
+	blockStart = i
+
+	// find the end of the line
+	blockEnd = i
+	for i < len(data) && data[i-1] != '\n' {
+		i++
+	}
+
+	// get working buffer
+	var raw bytes.Buffer
+
+	// put the first line into the working buffer
+	raw.Write(data[blockEnd:i])
+	blockEnd = i
+
+	// process the following lines
+	containsBlankLine := false
+
+gatherLines:
+	for blockEnd < len(data) {
+		i++
+
+		// find the end of this line
+		for i < len(data) && data[i-1] != '\n' {
+			i++
+		}
+
+		// if it is an empty line, guess that it is part of this item
+		// and move on to the next line
+		if p.isEmpty(data[blockEnd:i]) > 0 {
+			containsBlankLine = true
+			blockEnd = i
+			continue
+		}
+
+		n := 0
+		if n = isIndented(data[blockEnd:i], indentSize); n == 0 {
+			// this is the end of the block.
+			// we don't want to include this last line in the index.
+			break gatherLines
+		}
+
+		// if there were blank lines before this one, insert a new one now
+		if containsBlankLine {
+			raw.WriteByte('\n')
+			containsBlankLine = false
+		}
+
+		// get rid of that first tab, write to buffer
+		raw.Write(data[blockEnd+n : i])
+		hasBlock = true
+
+		blockEnd = i
+	}
+
+	if data[blockEnd-1] != '\n' {
+		raw.WriteByte('\n')
+	}
+
+	contents = raw.Bytes()
+
+	return
+}
+
+//
+//
+// Miscellaneous helper functions
+//
+//
+
+// Test if a character is a punctuation symbol.
+// Taken from a private function in regexp in the stdlib.
+func ispunct(c byte) bool {
+	for _, r := range []byte("!\"#$%&'()*+,-./:;<=>?@[\\]^_`{|}~") {
+		if c == r {
+			return true
+		}
+	}
+	return false
+}
+
+// Test if a character is a whitespace character.
+func isspace(c byte) bool {
+	return ishorizontalspace(c) || isverticalspace(c)
+}
+
+// Test if a character is a horizontal whitespace character.
+func ishorizontalspace(c byte) bool {
+	return c == ' ' || c == '\t'
+}
+
+// Test if a character is a vertical character.
+func isverticalspace(c byte) bool {
+	return c == '\n' || c == '\r' || c == '\f' || c == '\v'
+}
+
+// Test if a character is letter.
+func isletter(c byte) bool {
+	return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')
+}
+
+// Test if a character is a letter or a digit.
+// TODO: check when this is looking for ASCII alnum and when it should use unicode
+func isalnum(c byte) bool {
+	return (c >= '0' && c <= '9') || isletter(c)
+}
+
+// Replace tab characters with spaces, aligning to the next TAB_SIZE column.
+// always ends output with a newline
+func expandTabs(out *bytes.Buffer, line []byte, tabSize int) {
+	// first, check for common cases: no tabs, or only tabs at beginning of line
+	i, prefix := 0, 0
+	slowcase := false
+	for i = 0; i < len(line); i++ {
+		if line[i] == '\t' {
+			if prefix == i {
+				prefix++
+			} else {
+				slowcase = true
+				break
+			}
+		}
+	}
+
+	// no need to decode runes if all tabs are at the beginning of the line
+	if !slowcase {
+		for i = 0; i < prefix*tabSize; i++ {
+			out.WriteByte(' ')
+		}
+		out.Write(line[prefix:])
+		return
+	}
+
+	// the slow case: we need to count runes to figure out how
+	// many spaces to insert for each tab
+	column := 0
+	i = 0
+	for i < len(line) {
+		start := i
+		for i < len(line) && line[i] != '\t' {
+			_, size := utf8.DecodeRune(line[i:])
+			i += size
+			column++
+		}
+
+		if i > start {
+			out.Write(line[start:i])
+		}
+
+		if i >= len(line) {
+			break
+		}
+
+		for {
+			out.WriteByte(' ')
+			column++
+			if column%tabSize == 0 {
+				break
+			}
+		}
+
+		i++
+	}
+}
+
+// Find if a line counts as indented or not.
+// Returns number of characters the indent is (0 = not indented).
+func isIndented(data []byte, indentSize int) int {
+	if len(data) == 0 {
+		return 0
+	}
+	if data[0] == '\t' {
+		return 1
+	}
+	if len(data) < indentSize {
+		return 0
+	}
+	for i := 0; i < indentSize; i++ {
+		if data[i] != ' ' {
+			return 0
+		}
+	}
+	return indentSize
+}
+
+// Create a url-safe slug for fragments
+func slugify(in []byte) []byte {
+	if len(in) == 0 {
+		return in
+	}
+	out := make([]byte, 0, len(in))
+	sym := false
+
+	for _, ch := range in {
+		if isalnum(ch) {
+			sym = false
+			out = append(out, ch)
+		} else if sym {
+			continue
+		} else {
+			out = append(out, '-')
+			sym = true
+		}
+	}
+	var a, b int
+	var ch byte
+	for a, ch = range out {
+		if ch != '-' {
+			break
+		}
+	}
+	for b = len(out) - 1; b > 0; b-- {
+		if out[b] != '-' {
+			break
+		}
+	}
+	return out[a : b+1]
+}
diff --git a/vendor/github.com/russross/blackfriday/v2/node.go b/vendor/github.com/russross/blackfriday/v2/node.go
new file mode 100644
index 0000000..04e6050
--- /dev/null
+++ b/vendor/github.com/russross/blackfriday/v2/node.go
@@ -0,0 +1,360 @@
+package blackfriday
+
+import (
+	"bytes"
+	"fmt"
+)
+
+// NodeType specifies a type of a single node of a syntax tree. Usually one
+// node (and its type) corresponds to a single markdown feature, e.g. emphasis
+// or code block.
+type NodeType int
+
+// Constants for identifying different types of nodes. See NodeType.
+const (
+	Document NodeType = iota
+	BlockQuote
+	List
+	Item
+	Paragraph
+	Heading
+	HorizontalRule
+	Emph
+	Strong
+	Del
+	Link
+	Image
+	Text
+	HTMLBlock
+	CodeBlock
+	Softbreak
+	Hardbreak
+	Code
+	HTMLSpan
+	Table
+	TableCell
+	TableHead
+	TableBody
+	TableRow
+)
+
+var nodeTypeNames = []string{
+	Document:       "Document",
+	BlockQuote:     "BlockQuote",
+	List:           "List",
+	Item:           "Item",
+	Paragraph:      "Paragraph",
+	Heading:        "Heading",
+	HorizontalRule: "HorizontalRule",
+	Emph:           "Emph",
+	Strong:         "Strong",
+	Del:            "Del",
+	Link:           "Link",
+	Image:          "Image",
+	Text:           "Text",
+	HTMLBlock:      "HTMLBlock",
+	CodeBlock:      "CodeBlock",
+	Softbreak:      "Softbreak",
+	Hardbreak:      "Hardbreak",
+	Code:           "Code",
+	HTMLSpan:       "HTMLSpan",
+	Table:          "Table",
+	TableCell:      "TableCell",
+	TableHead:      "TableHead",
+	TableBody:      "TableBody",
+	TableRow:       "TableRow",
+}
+
+func (t NodeType) String() string {
+	return nodeTypeNames[t]
+}
+
+// ListData contains fields relevant to a List and Item node type.
+type ListData struct {
+	ListFlags       ListType
+	Tight           bool   // Skip <p>s around list item data if true
+	BulletChar      byte   // '*', '+' or '-' in bullet lists
+	Delimiter       byte   // '.' or ')' after the number in ordered lists
+	RefLink         []byte // If not nil, turns this list item into a footnote item and triggers different rendering
+	IsFootnotesList bool   // This is a list of footnotes
+}
+
+// LinkData contains fields relevant to a Link node type.
+type LinkData struct {
+	Destination []byte // Destination is what goes into a href
+	Title       []byte // Title is the tooltip thing that goes in a title attribute
+	NoteID      int    // NoteID contains a serial number of a footnote, zero if it's not a footnote
+	Footnote    *Node  // If it's a footnote, this is a direct link to the footnote Node. Otherwise nil.
+}
+
+// CodeBlockData contains fields relevant to a CodeBlock node type.
+type CodeBlockData struct {
+	IsFenced    bool   // Specifies whether it's a fenced code block or an indented one
+	Info        []byte // This holds the info string
+	FenceChar   byte
+	FenceLength int
+	FenceOffset int
+}
+
+// TableCellData contains fields relevant to a TableCell node type.
+type TableCellData struct {
+	IsHeader bool           // This tells if it's under the header row
+	Align    CellAlignFlags // This holds the value for align attribute
+}
+
+// HeadingData contains fields relevant to a Heading node type.
+type HeadingData struct {
+	Level        int    // This holds the heading level number
+	HeadingID    string // This might hold heading ID, if present
+	IsTitleblock bool   // Specifies whether it's a title block
+}
+
+// Node is a single element in the abstract syntax tree of the parsed document.
+// It holds connections to the structurally neighboring nodes and, for certain
+// types of nodes, additional information that might be needed when rendering.
+type Node struct {
+	Type       NodeType // Determines the type of the node
+	Parent     *Node    // Points to the parent
+	FirstChild *Node    // Points to the first child, if any
+	LastChild  *Node    // Points to the last child, if any
+	Prev       *Node    // Previous sibling; nil if it's the first child
+	Next       *Node    // Next sibling; nil if it's the last child
+
+	Literal []byte // Text contents of the leaf nodes
+
+	HeadingData   // Populated if Type is Heading
+	ListData      // Populated if Type is List
+	CodeBlockData // Populated if Type is CodeBlock
+	LinkData      // Populated if Type is Link
+	TableCellData // Populated if Type is TableCell
+
+	content []byte // Markdown content of the block nodes
+	open    bool   // Specifies an open block node that has not been finished to process yet
+}
+
+// NewNode allocates a node of a specified type.
+func NewNode(typ NodeType) *Node {
+	return &Node{
+		Type: typ,
+		open: true,
+	}
+}
+
+func (n *Node) String() string {
+	ellipsis := ""
+	snippet := n.Literal
+	if len(snippet) > 16 {
+		snippet = snippet[:16]
+		ellipsis = "..."
+	}
+	return fmt.Sprintf("%s: '%s%s'", n.Type, snippet, ellipsis)
+}
+
+// Unlink removes node 'n' from the tree.
+// It panics if the node is nil.
+func (n *Node) Unlink() {
+	if n.Prev != nil {
+		n.Prev.Next = n.Next
+	} else if n.Parent != nil {
+		n.Parent.FirstChild = n.Next
+	}
+	if n.Next != nil {
+		n.Next.Prev = n.Prev
+	} else if n.Parent != nil {
+		n.Parent.LastChild = n.Prev
+	}
+	n.Parent = nil
+	n.Next = nil
+	n.Prev = nil
+}
+
+// AppendChild adds a node 'child' as a child of 'n'.
+// It panics if either node is nil.
+func (n *Node) AppendChild(child *Node) {
+	child.Unlink()
+	child.Parent = n
+	if n.LastChild != nil {
+		n.LastChild.Next = child
+		child.Prev = n.LastChild
+		n.LastChild = child
+	} else {
+		n.FirstChild = child
+		n.LastChild = child
+	}
+}
+
+// InsertBefore inserts 'sibling' immediately before 'n'.
+// It panics if either node is nil.
+func (n *Node) InsertBefore(sibling *Node) {
+	sibling.Unlink()
+	sibling.Prev = n.Prev
+	if sibling.Prev != nil {
+		sibling.Prev.Next = sibling
+	}
+	sibling.Next = n
+	n.Prev = sibling
+	sibling.Parent = n.Parent
+	if sibling.Prev == nil {
+		sibling.Parent.FirstChild = sibling
+	}
+}
+
+// IsContainer returns true if 'n' can contain children.
+func (n *Node) IsContainer() bool {
+	switch n.Type {
+	case Document:
+		fallthrough
+	case BlockQuote:
+		fallthrough
+	case List:
+		fallthrough
+	case Item:
+		fallthrough
+	case Paragraph:
+		fallthrough
+	case Heading:
+		fallthrough
+	case Emph:
+		fallthrough
+	case Strong:
+		fallthrough
+	case Del:
+		fallthrough
+	case Link:
+		fallthrough
+	case Image:
+		fallthrough
+	case Table:
+		fallthrough
+	case TableHead:
+		fallthrough
+	case TableBody:
+		fallthrough
+	case TableRow:
+		fallthrough
+	case TableCell:
+		return true
+	default:
+		return false
+	}
+}
+
+// IsLeaf returns true if 'n' is a leaf node.
+func (n *Node) IsLeaf() bool {
+	return !n.IsContainer()
+}
+
+func (n *Node) canContain(t NodeType) bool {
+	if n.Type == List {
+		return t == Item
+	}
+	if n.Type == Document || n.Type == BlockQuote || n.Type == Item {
+		return t != Item
+	}
+	if n.Type == Table {
+		return t == TableHead || t == TableBody
+	}
+	if n.Type == TableHead || n.Type == TableBody {
+		return t == TableRow
+	}
+	if n.Type == TableRow {
+		return t == TableCell
+	}
+	return false
+}
+
+// WalkStatus allows NodeVisitor to have some control over the tree traversal.
+// It is returned from NodeVisitor and different values allow Node.Walk to
+// decide which node to go to next.
+type WalkStatus int
+
+const (
+	// GoToNext is the default traversal of every node.
+	GoToNext WalkStatus = iota
+	// SkipChildren tells walker to skip all children of current node.
+	SkipChildren
+	// Terminate tells walker to terminate the traversal.
+	Terminate
+)
+
+// NodeVisitor is a callback to be called when traversing the syntax tree.
+// Called twice for every node: once with entering=true when the branch is
+// first visited, then with entering=false after all the children are done.
+type NodeVisitor func(node *Node, entering bool) WalkStatus
+
+// Walk is a convenience method that instantiates a walker and starts a
+// traversal of subtree rooted at n.
+func (n *Node) Walk(visitor NodeVisitor) {
+	w := newNodeWalker(n)
+	for w.current != nil {
+		status := visitor(w.current, w.entering)
+		switch status {
+		case GoToNext:
+			w.next()
+		case SkipChildren:
+			w.entering = false
+			w.next()
+		case Terminate:
+			return
+		}
+	}
+}
+
+type nodeWalker struct {
+	current  *Node
+	root     *Node
+	entering bool
+}
+
+func newNodeWalker(root *Node) *nodeWalker {
+	return &nodeWalker{
+		current:  root,
+		root:     root,
+		entering: true,
+	}
+}
+
+func (nw *nodeWalker) next() {
+	if (!nw.current.IsContainer() || !nw.entering) && nw.current == nw.root {
+		nw.current = nil
+		return
+	}
+	if nw.entering && nw.current.IsContainer() {
+		if nw.current.FirstChild != nil {
+			nw.current = nw.current.FirstChild
+			nw.entering = true
+		} else {
+			nw.entering = false
+		}
+	} else if nw.current.Next == nil {
+		nw.current = nw.current.Parent
+		nw.entering = false
+	} else {
+		nw.current = nw.current.Next
+		nw.entering = true
+	}
+}
+
+func dump(ast *Node) {
+	fmt.Println(dumpString(ast))
+}
+
+func dumpR(ast *Node, depth int) string {
+	if ast == nil {
+		return ""
+	}
+	indent := bytes.Repeat([]byte("\t"), depth)
+	content := ast.Literal
+	if content == nil {
+		content = ast.content
+	}
+	result := fmt.Sprintf("%s%s(%q)\n", indent, ast.Type, content)
+	for n := ast.FirstChild; n != nil; n = n.Next {
+		result += dumpR(n, depth+1)
+	}
+	return result
+}
+
+func dumpString(ast *Node) string {
+	return dumpR(ast, 0)
+}
diff --git a/vendor/github.com/russross/blackfriday/v2/smartypants.go b/vendor/github.com/russross/blackfriday/v2/smartypants.go
new file mode 100644
index 0000000..3a220e9
--- /dev/null
+++ b/vendor/github.com/russross/blackfriday/v2/smartypants.go
@@ -0,0 +1,457 @@
+//
+// Blackfriday Markdown Processor
+// Available at http://github.com/russross/blackfriday
+//
+// Copyright © 2011 Russ Ross <russ@russross.com>.
+// Distributed under the Simplified BSD License.
+// See README.md for details.
+//
+
+//
+//
+// SmartyPants rendering
+//
+//
+
+package blackfriday
+
+import (
+	"bytes"
+	"io"
+)
+
+// SPRenderer is a struct containing state of a Smartypants renderer.
+type SPRenderer struct {
+	inSingleQuote bool
+	inDoubleQuote bool
+	callbacks     [256]smartCallback
+}
+
+func wordBoundary(c byte) bool {
+	return c == 0 || isspace(c) || ispunct(c)
+}
+
+func tolower(c byte) byte {
+	if c >= 'A' && c <= 'Z' {
+		return c - 'A' + 'a'
+	}
+	return c
+}
+
+func isdigit(c byte) bool {
+	return c >= '0' && c <= '9'
+}
+
+func smartQuoteHelper(out *bytes.Buffer, previousChar byte, nextChar byte, quote byte, isOpen *bool, addNBSP bool) bool {
+	// edge of the buffer is likely to be a tag that we don't get to see,
+	// so we treat it like text sometimes
+
+	// enumerate all sixteen possibilities for (previousChar, nextChar)
+	// each can be one of {0, space, punct, other}
+	switch {
+	case previousChar == 0 && nextChar == 0:
+		// context is not any help here, so toggle
+		*isOpen = !*isOpen
+	case isspace(previousChar) && nextChar == 0:
+		// [ "] might be [ "<code>foo...]
+		*isOpen = true
+	case ispunct(previousChar) && nextChar == 0:
+		// [!"] hmm... could be [Run!"] or [("<code>...]
+		*isOpen = false
+	case /* isnormal(previousChar) && */ nextChar == 0:
+		// [a"] is probably a close
+		*isOpen = false
+	case previousChar == 0 && isspace(nextChar):
+		// [" ] might be [...foo</code>" ]
+		*isOpen = false
+	case isspace(previousChar) && isspace(nextChar):
+		// [ " ] context is not any help here, so toggle
+		*isOpen = !*isOpen
+	case ispunct(previousChar) && isspace(nextChar):
+		// [!" ] is probably a close
+		*isOpen = false
+	case /* isnormal(previousChar) && */ isspace(nextChar):
+		// [a" ] this is one of the easy cases
+		*isOpen = false
+	case previousChar == 0 && ispunct(nextChar):
+		// ["!] hmm... could be ["$1.95] or [</code>"!...]
+		*isOpen = false
+	case isspace(previousChar) && ispunct(nextChar):
+		// [ "!] looks more like [ "$1.95]
+		*isOpen = true
+	case ispunct(previousChar) && ispunct(nextChar):
+		// [!"!] context is not any help here, so toggle
+		*isOpen = !*isOpen
+	case /* isnormal(previousChar) && */ ispunct(nextChar):
+		// [a"!] is probably a close
+		*isOpen = false
+	case previousChar == 0 /* && isnormal(nextChar) */ :
+		// ["a] is probably an open
+		*isOpen = true
+	case isspace(previousChar) /* && isnormal(nextChar) */ :
+		// [ "a] this is one of the easy cases
+		*isOpen = true
+	case ispunct(previousChar) /* && isnormal(nextChar) */ :
+		// [!"a] is probably an open
+		*isOpen = true
+	default:
+		// [a'b] maybe a contraction?
+		*isOpen = false
+	}
+
+	// Note that with the limited lookahead, this non-breaking
+	// space will also be appended to single double quotes.
+	if addNBSP && !*isOpen {
+		out.WriteString("&nbsp;")
+	}
+
+	out.WriteByte('&')
+	if *isOpen {
+		out.WriteByte('l')
+	} else {
+		out.WriteByte('r')
+	}
+	out.WriteByte(quote)
+	out.WriteString("quo;")
+
+	if addNBSP && *isOpen {
+		out.WriteString("&nbsp;")
+	}
+
+	return true
+}
+
+func (r *SPRenderer) smartSingleQuote(out *bytes.Buffer, previousChar byte, text []byte) int {
+	if len(text) >= 2 {
+		t1 := tolower(text[1])
+
+		if t1 == '\'' {
+			nextChar := byte(0)
+			if len(text) >= 3 {
+				nextChar = text[2]
+			}
+			if smartQuoteHelper(out, previousChar, nextChar, 'd', &r.inDoubleQuote, false) {
+				return 1
+			}
+		}
+
+		if (t1 == 's' || t1 == 't' || t1 == 'm' || t1 == 'd') && (len(text) < 3 || wordBoundary(text[2])) {
+			out.WriteString("&rsquo;")
+			return 0
+		}
+
+		if len(text) >= 3 {
+			t2 := tolower(text[2])
+
+			if ((t1 == 'r' && t2 == 'e') || (t1 == 'l' && t2 == 'l') || (t1 == 'v' && t2 == 'e')) &&
+				(len(text) < 4 || wordBoundary(text[3])) {
+				out.WriteString("&rsquo;")
+				return 0
+			}
+		}
+	}
+
+	nextChar := byte(0)
+	if len(text) > 1 {
+		nextChar = text[1]
+	}
+	if smartQuoteHelper(out, previousChar, nextChar, 's', &r.inSingleQuote, false) {
+		return 0
+	}
+
+	out.WriteByte(text[0])
+	return 0
+}
+
+func (r *SPRenderer) smartParens(out *bytes.Buffer, previousChar byte, text []byte) int {
+	if len(text) >= 3 {
+		t1 := tolower(text[1])
+		t2 := tolower(text[2])
+
+		if t1 == 'c' && t2 == ')' {
+			out.WriteString("&copy;")
+			return 2
+		}
+
+		if t1 == 'r' && t2 == ')' {
+			out.WriteString("&reg;")
+			return 2
+		}
+
+		if len(text) >= 4 && t1 == 't' && t2 == 'm' && text[3] == ')' {
+			out.WriteString("&trade;")
+			return 3
+		}
+	}
+
+	out.WriteByte(text[0])
+	return 0
+}
+
+func (r *SPRenderer) smartDash(out *bytes.Buffer, previousChar byte, text []byte) int {
+	if len(text) >= 2 {
+		if text[1] == '-' {
+			out.WriteString("&mdash;")
+			return 1
+		}
+
+		if wordBoundary(previousChar) && wordBoundary(text[1]) {
+			out.WriteString("&ndash;")
+			return 0
+		}
+	}
+
+	out.WriteByte(text[0])
+	return 0
+}
+
+func (r *SPRenderer) smartDashLatex(out *bytes.Buffer, previousChar byte, text []byte) int {
+	if len(text) >= 3 && text[1] == '-' && text[2] == '-' {
+		out.WriteString("&mdash;")
+		return 2
+	}
+	if len(text) >= 2 && text[1] == '-' {
+		out.WriteString("&ndash;")
+		return 1
+	}
+
+	out.WriteByte(text[0])
+	return 0
+}
+
+func (r *SPRenderer) smartAmpVariant(out *bytes.Buffer, previousChar byte, text []byte, quote byte, addNBSP bool) int {
+	if bytes.HasPrefix(text, []byte("&quot;")) {
+		nextChar := byte(0)
+		if len(text) >= 7 {
+			nextChar = text[6]
+		}
+		if smartQuoteHelper(out, previousChar, nextChar, quote, &r.inDoubleQuote, addNBSP) {
+			return 5
+		}
+	}
+
+	if bytes.HasPrefix(text, []byte("&#0;")) {
+		return 3
+	}
+
+	out.WriteByte('&')
+	return 0
+}
+
+func (r *SPRenderer) smartAmp(angledQuotes, addNBSP bool) func(*bytes.Buffer, byte, []byte) int {
+	var quote byte = 'd'
+	if angledQuotes {
+		quote = 'a'
+	}
+
+	return func(out *bytes.Buffer, previousChar byte, text []byte) int {
+		return r.smartAmpVariant(out, previousChar, text, quote, addNBSP)
+	}
+}
+
+func (r *SPRenderer) smartPeriod(out *bytes.Buffer, previousChar byte, text []byte) int {
+	if len(text) >= 3 && text[1] == '.' && text[2] == '.' {
+		out.WriteString("&hellip;")
+		return 2
+	}
+
+	if len(text) >= 5 && text[1] == ' ' && text[2] == '.' && text[3] == ' ' && text[4] == '.' {
+		out.WriteString("&hellip;")
+		return 4
+	}
+
+	out.WriteByte(text[0])
+	return 0
+}
+
+func (r *SPRenderer) smartBacktick(out *bytes.Buffer, previousChar byte, text []byte) int {
+	if len(text) >= 2 && text[1] == '`' {
+		nextChar := byte(0)
+		if len(text) >= 3 {
+			nextChar = text[2]
+		}
+		if smartQuoteHelper(out, previousChar, nextChar, 'd', &r.inDoubleQuote, false) {
+			return 1
+		}
+	}
+
+	out.WriteByte(text[0])
+	return 0
+}
+
+func (r *SPRenderer) smartNumberGeneric(out *bytes.Buffer, previousChar byte, text []byte) int {
+	if wordBoundary(previousChar) && previousChar != '/' && len(text) >= 3 {
+		// is it of the form digits/digits(word boundary)?, i.e., \d+/\d+\b
+		// note: check for regular slash (/) or fraction slash (⁄, 0x2044, or 0xe2 81 84 in utf-8)
+		//       and avoid changing dates like 1/23/2005 into fractions.
+		numEnd := 0
+		for len(text) > numEnd && isdigit(text[numEnd]) {
+			numEnd++
+		}
+		if numEnd == 0 {
+			out.WriteByte(text[0])
+			return 0
+		}
+		denStart := numEnd + 1
+		if len(text) > numEnd+3 && text[numEnd] == 0xe2 && text[numEnd+1] == 0x81 && text[numEnd+2] == 0x84 {
+			denStart = numEnd + 3
+		} else if len(text) < numEnd+2 || text[numEnd] != '/' {
+			out.WriteByte(text[0])
+			return 0
+		}
+		denEnd := denStart
+		for len(text) > denEnd && isdigit(text[denEnd]) {
+			denEnd++
+		}
+		if denEnd == denStart {
+			out.WriteByte(text[0])
+			return 0
+		}
+		if len(text) == denEnd || wordBoundary(text[denEnd]) && text[denEnd] != '/' {
+			out.WriteString("<sup>")
+			out.Write(text[:numEnd])
+			out.WriteString("</sup>&frasl;<sub>")
+			out.Write(text[denStart:denEnd])
+			out.WriteString("</sub>")
+			return denEnd - 1
+		}
+	}
+
+	out.WriteByte(text[0])
+	return 0
+}
+
+func (r *SPRenderer) smartNumber(out *bytes.Buffer, previousChar byte, text []byte) int {
+	if wordBoundary(previousChar) && previousChar != '/' && len(text) >= 3 {
+		if text[0] == '1' && text[1] == '/' && text[2] == '2' {
+			if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' {
+				out.WriteString("&frac12;")
+				return 2
+			}
+		}
+
+		if text[0] == '1' && text[1] == '/' && text[2] == '4' {
+			if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' || (len(text) >= 5 && tolower(text[3]) == 't' && tolower(text[4]) == 'h') {
+				out.WriteString("&frac14;")
+				return 2
+			}
+		}
+
+		if text[0] == '3' && text[1] == '/' && text[2] == '4' {
+			if len(text) < 4 || wordBoundary(text[3]) && text[3] != '/' || (len(text) >= 6 && tolower(text[3]) == 't' && tolower(text[4]) == 'h' && tolower(text[5]) == 's') {
+				out.WriteString("&frac34;")
+				return 2
+			}
+		}
+	}
+
+	out.WriteByte(text[0])
+	return 0
+}
+
+func (r *SPRenderer) smartDoubleQuoteVariant(out *bytes.Buffer, previousChar byte, text []byte, quote byte) int {
+	nextChar := byte(0)
+	if len(text) > 1 {
+		nextChar = text[1]
+	}
+	if !smartQuoteHelper(out, previousChar, nextChar, quote, &r.inDoubleQuote, false) {
+		out.WriteString("&quot;")
+	}
+
+	return 0
+}
+
+func (r *SPRenderer) smartDoubleQuote(out *bytes.Buffer, previousChar byte, text []byte) int {
+	return r.smartDoubleQuoteVariant(out, previousChar, text, 'd')
+}
+
+func (r *SPRenderer) smartAngledDoubleQuote(out *bytes.Buffer, previousChar byte, text []byte) int {
+	return r.smartDoubleQuoteVariant(out, previousChar, text, 'a')
+}
+
+func (r *SPRenderer) smartLeftAngle(out *bytes.Buffer, previousChar byte, text []byte) int {
+	i := 0
+
+	for i < len(text) && text[i] != '>' {
+		i++
+	}
+
+	out.Write(text[:i+1])
+	return i
+}
+
+type smartCallback func(out *bytes.Buffer, previousChar byte, text []byte) int
+
+// NewSmartypantsRenderer constructs a Smartypants renderer object.
+func NewSmartypantsRenderer(flags HTMLFlags) *SPRenderer {
+	var (
+		r SPRenderer
+
+		smartAmpAngled      = r.smartAmp(true, false)
+		smartAmpAngledNBSP  = r.smartAmp(true, true)
+		smartAmpRegular     = r.smartAmp(false, false)
+		smartAmpRegularNBSP = r.smartAmp(false, true)
+
+		addNBSP = flags&SmartypantsQuotesNBSP != 0
+	)
+
+	if flags&SmartypantsAngledQuotes == 0 {
+		r.callbacks['"'] = r.smartDoubleQuote
+		if !addNBSP {
+			r.callbacks['&'] = smartAmpRegular
+		} else {
+			r.callbacks['&'] = smartAmpRegularNBSP
+		}
+	} else {
+		r.callbacks['"'] = r.smartAngledDoubleQuote
+		if !addNBSP {
+			r.callbacks['&'] = smartAmpAngled
+		} else {
+			r.callbacks['&'] = smartAmpAngledNBSP
+		}
+	}
+	r.callbacks['\''] = r.smartSingleQuote
+	r.callbacks['('] = r.smartParens
+	if flags&SmartypantsDashes != 0 {
+		if flags&SmartypantsLatexDashes == 0 {
+			r.callbacks['-'] = r.smartDash
+		} else {
+			r.callbacks['-'] = r.smartDashLatex
+		}
+	}
+	r.callbacks['.'] = r.smartPeriod
+	if flags&SmartypantsFractions == 0 {
+		r.callbacks['1'] = r.smartNumber
+		r.callbacks['3'] = r.smartNumber
+	} else {
+		for ch := '1'; ch <= '9'; ch++ {
+			r.callbacks[ch] = r.smartNumberGeneric
+		}
+	}
+	r.callbacks['<'] = r.smartLeftAngle
+	r.callbacks['`'] = r.smartBacktick
+	return &r
+}
+
+// Process is the entry point of the Smartypants renderer.
+func (r *SPRenderer) Process(w io.Writer, text []byte) {
+	mark := 0
+	for i := 0; i < len(text); i++ {
+		if action := r.callbacks[text[i]]; action != nil {
+			if i > mark {
+				w.Write(text[mark:i])
+			}
+			previousChar := byte(0)
+			if i > 0 {
+				previousChar = text[i-1]
+			}
+			var tmp bytes.Buffer
+			i += action(&tmp, previousChar, text[i:])
+			w.Write(tmp.Bytes())
+			mark = i + 1
+		}
+	}
+	if mark < len(text) {
+		w.Write(text[mark:])
+	}
+}
diff --git a/vendor/github.com/urfave/cli/.flake8 b/vendor/github.com/urfave/cli/.flake8
new file mode 100644
index 0000000..6deafc2
--- /dev/null
+++ b/vendor/github.com/urfave/cli/.flake8
@@ -0,0 +1,2 @@
+[flake8]
+max-line-length = 120
diff --git a/vendor/github.com/urfave/cli/.gitignore b/vendor/github.com/urfave/cli/.gitignore
new file mode 100644
index 0000000..9d18120
--- /dev/null
+++ b/vendor/github.com/urfave/cli/.gitignore
@@ -0,0 +1,10 @@
+*.coverprofile
+coverage.txt
+node_modules/
+vendor
+.idea
+/.local/
+/internal/
+/site/
+package.json
+package-lock.json
diff --git a/vendor/github.com/urfave/cli/CODE_OF_CONDUCT.md b/vendor/github.com/urfave/cli/CODE_OF_CONDUCT.md
new file mode 100644
index 0000000..41ba294
--- /dev/null
+++ b/vendor/github.com/urfave/cli/CODE_OF_CONDUCT.md
@@ -0,0 +1,74 @@
+# Contributor Covenant Code of Conduct
+
+## Our Pledge
+
+In the interest of fostering an open and welcoming environment, we as
+contributors and maintainers pledge to making participation in our project and
+our community a harassment-free experience for everyone, regardless of age, body
+size, disability, ethnicity, gender identity and expression, level of experience,
+education, socio-economic status, nationality, personal appearance, race,
+religion, or sexual identity and orientation.
+
+## Our Standards
+
+Examples of behavior that contributes to creating a positive environment
+include:
+
+* Using welcoming and inclusive language
+* Being respectful of differing viewpoints and experiences
+* Gracefully accepting constructive criticism
+* Focusing on what is best for the community
+* Showing empathy towards other community members
+
+Examples of unacceptable behavior by participants include:
+
+* The use of sexualized language or imagery and unwelcome sexual attention or
+  advances
+* Trolling, insulting/derogatory comments, and personal or political attacks
+* Public or private harassment
+* Publishing others' private information, such as a physical or electronic
+  address, without explicit permission
+* Other conduct which could reasonably be considered inappropriate in a
+  professional setting
+
+## Our Responsibilities
+
+Project maintainers are responsible for clarifying the standards of acceptable
+behavior and are expected to take appropriate and fair corrective action in
+response to any instances of unacceptable behavior.
+
+Project maintainers have the right and responsibility to remove, edit, or
+reject comments, commits, code, wiki edits, issues, and other contributions
+that are not aligned to this Code of Conduct, or to ban temporarily or
+permanently any contributor for other behaviors that they deem inappropriate,
+threatening, offensive, or harmful.
+
+## Scope
+
+This Code of Conduct applies both within project spaces and in public spaces
+when an individual is representing the project or its community. Examples of
+representing a project or community include using an official project e-mail
+address, posting via an official social media account, or acting as an appointed
+representative at an online or offline event. Representation of a project may be
+further defined and clarified by project maintainers.
+
+## Enforcement
+
+Instances of abusive, harassing, or otherwise unacceptable behavior may be
+reported by contacting Dan Buch at dan@meatballhat.com. All complaints will be
+reviewed and investigated and will result in a response that is deemed necessary
+and appropriate to the circumstances. The project team is obligated to maintain
+confidentiality with regard to the reporter of an incident.  Further details of
+specific enforcement policies may be posted separately.
+
+Project maintainers who do not follow or enforce the Code of Conduct in good
+faith may face temporary or permanent repercussions as determined by other
+members of the project's leadership.
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant][homepage], version 1.4,
+available at https://www.contributor-covenant.org/version/1/4/code-of-conduct.html
+
+[homepage]: https://www.contributor-covenant.org
+
diff --git a/vendor/github.com/codegangsta/cli/LICENSE b/vendor/github.com/urfave/cli/LICENSE
similarity index 95%
rename from vendor/github.com/codegangsta/cli/LICENSE
rename to vendor/github.com/urfave/cli/LICENSE
index 42a597e..99d8559 100644
--- a/vendor/github.com/codegangsta/cli/LICENSE
+++ b/vendor/github.com/urfave/cli/LICENSE
@@ -1,6 +1,6 @@
 MIT License
 
-Copyright (c) 2016 Jeremy Saenz & Contributors
+Copyright (c) 2023 Jeremy Saenz & Contributors
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/vendor/github.com/urfave/cli/README.md b/vendor/github.com/urfave/cli/README.md
new file mode 100644
index 0000000..c7dd62b
--- /dev/null
+++ b/vendor/github.com/urfave/cli/README.md
@@ -0,0 +1,51 @@
+cli
+===
+
+[![Run Tests](https://github.com/urfave/cli/actions/workflows/cli.yml/badge.svg?branch=v1-maint)](https://github.com/urfave/cli/actions/workflows/cli.yml)
+[![Go Reference](https://pkg.go.dev/badge/github.com/urfave/cli/.svg)](https://pkg.go.dev/github.com/urfave/cli/)
+[![Go Report Card](https://goreportcard.com/badge/urfave/cli)](https://goreportcard.com/report/urfave/cli)
+[![codecov](https://codecov.io/gh/urfave/cli/branch/v1-maint/graph/badge.svg)](https://codecov.io/gh/urfave/cli)
+
+cli is a simple, fast, and fun package for building command line apps in Go. The
+goal is to enable developers to write fast and distributable command line
+applications in an expressive way.
+
+## Usage Documentation
+
+Usage documentation for `v1` is available [at the docs
+site](https://cli.urfave.org/v1/getting-started/) or in-tree at
+[./docs/v1/manual.md](./docs/v1/manual.md)
+
+## Installation
+
+Make sure you have a working Go environment. Go version 1.18+ is supported.
+
+### Supported platforms
+
+cli is tested against multiple versions of Go on Linux, and against the latest released
+version of Go on OS X and Windows.  For full details, see
+[./.github/workflows/cli.yml](./.github/workflows/cli.yml).
+
+### Build tags
+
+You can use the following build tags:
+
+#### `urfave_cli_no_docs`
+
+When set, this removes `ToMarkdown` and `ToMan` methods, so your application
+won't be able to call those. This reduces the resulting binary size by about
+300-400 KB (measured using Go 1.18.1 on Linux/amd64), due to less dependencies.
+
+### Using `v1` releases
+
+```
+$ go get github.com/urfave/cli
+```
+
+```go
+...
+import (
+  "github.com/urfave/cli"
+)
+...
+```
diff --git a/vendor/github.com/codegangsta/cli/app.go b/vendor/github.com/urfave/cli/app.go
similarity index 78%
rename from vendor/github.com/codegangsta/cli/app.go
rename to vendor/github.com/urfave/cli/app.go
index 95ffc0b..df5a9a9 100644
--- a/vendor/github.com/codegangsta/cli/app.go
+++ b/vendor/github.com/urfave/cli/app.go
@@ -1,9 +1,9 @@
 package cli
 
 import (
+	"flag"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"os"
 	"path/filepath"
 	"sort"
@@ -11,9 +11,10 @@ import (
 )
 
 var (
-	changeLogURL                    = "https://github.com/urfave/cli/blob/master/CHANGELOG.md"
-	appActionDeprecationURL         = fmt.Sprintf("%s#deprecated-cli-app-action-signature", changeLogURL)
-	runAndExitOnErrorDeprecationURL = fmt.Sprintf("%s#deprecated-cli-app-runandexitonerror", changeLogURL)
+	changeLogURL            = "https://github.com/urfave/cli/blob/master/CHANGELOG.md"
+	appActionDeprecationURL = fmt.Sprintf("%s#deprecated-cli-app-action-signature", changeLogURL)
+	// unused variable. commented for now. will remove in future if agreed upon by everyone
+	//runAndExitOnErrorDeprecationURL = fmt.Sprintf("%s#deprecated-cli-app-runandexitonerror", changeLogURL)
 
 	contactSysadmin = "This is an error in the application.  Please contact the distributor of this application if this is not you."
 
@@ -83,8 +84,21 @@ type App struct {
 	Writer io.Writer
 	// ErrWriter writes error output
 	ErrWriter io.Writer
+	// Execute this function to handle ExitErrors. If not provided, HandleExitCoder is provided to
+	// function as a default, so this is optional.
+	ExitErrHandler ExitErrHandlerFunc
 	// Other custom info
 	Metadata map[string]interface{}
+	// Carries a function which returns app specific info.
+	ExtraInfo func() map[string]string
+	// CustomAppHelpTemplate the text template for app help topic.
+	// cli.go uses text/template to render templates. You can
+	// render custom help text by setting this variable.
+	CustomAppHelpTemplate string
+	// Boolean to enable short-option handling so user can combine several
+	// single-character bool arguements into one
+	// i.e. foobar -o -v -> foobar -ov
+	UseShortOptionHandling bool
 
 	didSetup bool
 }
@@ -107,7 +121,6 @@ func NewApp() *App {
 		HelpName:     filepath.Base(os.Args[0]),
 		Usage:        "A new cli application",
 		UsageText:    "",
-		Version:      "0.0.0",
 		BashComplete: DefaultAppComplete,
 		Action:       helpCommand.Action,
 		Compiled:     compileTime(),
@@ -129,7 +142,7 @@ func (a *App) Setup() {
 		a.Authors = append(a.Authors, Author{Name: a.Author, Email: a.Email})
 	}
 
-	newCmds := []Command{}
+	var newCmds []Command
 	for _, c := range a.Commands {
 		if c.HelpName == "" {
 			c.HelpName = fmt.Sprintf("%s %s", a.HelpName, c.Name)
@@ -145,6 +158,10 @@ func (a *App) Setup() {
 		}
 	}
 
+	if a.Version == "" {
+		a.HideVersion = true
+	}
+
 	if !a.HideVersion {
 		a.appendFlag(VersionFlag)
 	}
@@ -164,6 +181,14 @@ func (a *App) Setup() {
 	}
 }
 
+func (a *App) newFlagSet() (*flag.FlagSet, error) {
+	return flagSet(a.Name, a.Flags)
+}
+
+func (a *App) useShortOptionHandling() bool {
+	return a.UseShortOptionHandling
+}
+
 // Run is the entry point to the cli app. Parses the arguments slice and routes
 // to the proper flag/args combination
 func (a *App) Run(arguments []string) (err error) {
@@ -177,19 +202,17 @@ func (a *App) Run(arguments []string) (err error) {
 	// always appends the completion flag at the end of the command
 	shellComplete, arguments := checkShellCompleteFlag(a, arguments)
 
-	// parse flags
-	set, err := flagSet(a.Name, a.Flags)
+	set, err := a.newFlagSet()
 	if err != nil {
 		return err
 	}
 
-	set.SetOutput(ioutil.Discard)
-	err = set.Parse(arguments[1:])
+	err = parseIter(set, a, arguments[1:], shellComplete)
 	nerr := normalizeFlags(a.Flags, set)
 	context := NewContext(a, set, nil)
 	if nerr != nil {
-		fmt.Fprintln(a.Writer, nerr)
-		ShowAppHelp(context)
+		_, _ = fmt.Fprintln(a.Writer, nerr)
+		_ = ShowAppHelp(context)
 		return nerr
 	}
 	context.shellComplete = shellComplete
@@ -201,16 +224,16 @@ func (a *App) Run(arguments []string) (err error) {
 	if err != nil {
 		if a.OnUsageError != nil {
 			err := a.OnUsageError(context, err, false)
-			HandleExitCoder(err)
+			a.handleExitCoder(context, err)
 			return err
 		}
-		fmt.Fprintf(a.Writer, "%s %s\n\n", "Incorrect Usage.", err.Error())
-		ShowAppHelp(context)
+		_, _ = fmt.Fprintf(a.Writer, "%s %s\n\n", "Incorrect Usage.", err.Error())
+		_ = ShowAppHelp(context)
 		return err
 	}
 
 	if !a.HideHelp && checkHelp(context) {
-		ShowAppHelp(context)
+		_ = ShowAppHelp(context)
 		return nil
 	}
 
@@ -219,7 +242,13 @@ func (a *App) Run(arguments []string) (err error) {
 		return nil
 	}
 
-	if a.After != nil {
+	cerr := checkRequiredFlags(a.Flags, context)
+	if cerr != nil {
+		_ = ShowAppHelp(context)
+		return cerr
+	}
+
+	if a.After != nil && !context.shellComplete {
 		defer func() {
 			if afterErr := a.After(context); afterErr != nil {
 				if err != nil {
@@ -231,12 +260,10 @@ func (a *App) Run(arguments []string) (err error) {
 		}()
 	}
 
-	if a.Before != nil {
+	if a.Before != nil && !context.shellComplete {
 		beforeErr := a.Before(context)
 		if beforeErr != nil {
-			fmt.Fprintf(a.Writer, "%v\n\n", beforeErr)
-			ShowAppHelp(context)
-			HandleExitCoder(beforeErr)
+			a.handleExitCoder(context, beforeErr)
 			err = beforeErr
 			return err
 		}
@@ -258,7 +285,7 @@ func (a *App) Run(arguments []string) (err error) {
 	// Run default Action
 	err = HandleAction(a.Action, context)
 
-	HandleExitCoder(err)
+	a.handleExitCoder(context, err)
 	return err
 }
 
@@ -269,7 +296,7 @@ func (a *App) Run(arguments []string) (err error) {
 // code in the cli.ExitCoder
 func (a *App) RunAndExitOnError() {
 	if err := a.Run(os.Args); err != nil {
-		fmt.Fprintln(a.errWriter(), err)
+		_, _ = fmt.Fprintln(a.errWriter(), err)
 		OsExiter(1)
 	}
 }
@@ -296,24 +323,22 @@ func (a *App) RunAsSubcommand(ctx *Context) (err error) {
 	}
 	a.Commands = newCmds
 
-	// parse flags
-	set, err := flagSet(a.Name, a.Flags)
+	set, err := a.newFlagSet()
 	if err != nil {
 		return err
 	}
 
-	set.SetOutput(ioutil.Discard)
-	err = set.Parse(ctx.Args().Tail())
+	err = parseIter(set, a, ctx.Args().Tail(), ctx.shellComplete)
 	nerr := normalizeFlags(a.Flags, set)
 	context := NewContext(a, set, ctx)
 
 	if nerr != nil {
-		fmt.Fprintln(a.Writer, nerr)
-		fmt.Fprintln(a.Writer)
+		_, _ = fmt.Fprintln(a.Writer, nerr)
+		_, _ = fmt.Fprintln(a.Writer)
 		if len(a.Commands) > 0 {
-			ShowSubcommandHelp(context)
+			_ = ShowSubcommandHelp(context)
 		} else {
-			ShowCommandHelp(ctx, context.Args().First())
+			_ = ShowCommandHelp(ctx, context.Args().First())
 		}
 		return nerr
 	}
@@ -325,11 +350,11 @@ func (a *App) RunAsSubcommand(ctx *Context) (err error) {
 	if err != nil {
 		if a.OnUsageError != nil {
 			err = a.OnUsageError(context, err, true)
-			HandleExitCoder(err)
+			a.handleExitCoder(context, err)
 			return err
 		}
-		fmt.Fprintf(a.Writer, "%s %s\n\n", "Incorrect Usage.", err.Error())
-		ShowSubcommandHelp(context)
+		_, _ = fmt.Fprintf(a.Writer, "%s %s\n\n", "Incorrect Usage.", err.Error())
+		_ = ShowSubcommandHelp(context)
 		return err
 	}
 
@@ -343,11 +368,17 @@ func (a *App) RunAsSubcommand(ctx *Context) (err error) {
 		}
 	}
 
-	if a.After != nil {
+	cerr := checkRequiredFlags(a.Flags, context)
+	if cerr != nil {
+		_ = ShowSubcommandHelp(context)
+		return cerr
+	}
+
+	if a.After != nil && !context.shellComplete {
 		defer func() {
 			afterErr := a.After(context)
 			if afterErr != nil {
-				HandleExitCoder(err)
+				a.handleExitCoder(context, err)
 				if err != nil {
 					err = NewMultiError(err, afterErr)
 				} else {
@@ -357,10 +388,10 @@ func (a *App) RunAsSubcommand(ctx *Context) (err error) {
 		}()
 	}
 
-	if a.Before != nil {
+	if a.Before != nil && !context.shellComplete {
 		beforeErr := a.Before(context)
 		if beforeErr != nil {
-			HandleExitCoder(beforeErr)
+			a.handleExitCoder(context, beforeErr)
 			err = beforeErr
 			return err
 		}
@@ -378,7 +409,7 @@ func (a *App) RunAsSubcommand(ctx *Context) (err error) {
 	// Run default Action
 	err = HandleAction(a.Action, context)
 
-	HandleExitCoder(err)
+	a.handleExitCoder(context, err)
 	return err
 }
 
@@ -419,7 +450,7 @@ func (a *App) VisibleCategories() []*CommandCategory {
 
 // VisibleCommands returns a slice of the Commands with Hidden=false
 func (a *App) VisibleCommands() []Command {
-	ret := []Command{}
+	var ret []Command
 	for _, command := range a.Commands {
 		if !command.Hidden {
 			ret = append(ret, command)
@@ -444,7 +475,6 @@ func (a *App) hasFlag(flag Flag) bool {
 }
 
 func (a *App) errWriter() io.Writer {
-
 	// When the app ErrWriter is nil use the package level one.
 	if a.ErrWriter == nil {
 		return ErrWriter
@@ -459,6 +489,14 @@ func (a *App) appendFlag(flag Flag) {
 	}
 }
 
+func (a *App) handleExitCoder(context *Context, err error) {
+	if a.ExitErrHandler != nil {
+		a.ExitErrHandler(context, err)
+	} else {
+		HandleExitCoder(err)
+	}
+}
+
 // Author represents someone who has contributed to a cli project.
 type Author struct {
 	Name  string // The Authors name
@@ -479,14 +517,15 @@ func (a Author) String() string {
 // it's an ActionFunc or a func with the legacy signature for Action, the func
 // is run!
 func HandleAction(action interface{}, context *Context) (err error) {
-	if a, ok := action.(ActionFunc); ok {
+	switch a := action.(type) {
+	case ActionFunc:
 		return a(context)
-	} else if a, ok := action.(func(*Context) error); ok {
+	case func(*Context) error:
 		return a(context)
-	} else if a, ok := action.(func(*Context)); ok { // deprecated function signature
+	case func(*Context): // deprecated function signature
 		a(context)
 		return nil
-	} else {
-		return errInvalidActionType
 	}
+
+	return errInvalidActionType
 }
diff --git a/vendor/github.com/codegangsta/cli/category.go b/vendor/github.com/urfave/cli/category.go
similarity index 95%
rename from vendor/github.com/codegangsta/cli/category.go
rename to vendor/github.com/urfave/cli/category.go
index 1a60550..bf3c73c 100644
--- a/vendor/github.com/codegangsta/cli/category.go
+++ b/vendor/github.com/urfave/cli/category.go
@@ -10,7 +10,7 @@ type CommandCategory struct {
 }
 
 func (c CommandCategories) Less(i, j int) bool {
-	return c[i].Name < c[j].Name
+	return lexicographicLess(c[i].Name, c[j].Name)
 }
 
 func (c CommandCategories) Len() int {
diff --git a/vendor/github.com/codegangsta/cli/cli.go b/vendor/github.com/urfave/cli/cli.go
similarity index 87%
rename from vendor/github.com/codegangsta/cli/cli.go
rename to vendor/github.com/urfave/cli/cli.go
index 74fd101..4bd2508 100644
--- a/vendor/github.com/codegangsta/cli/cli.go
+++ b/vendor/github.com/urfave/cli/cli.go
@@ -12,10 +12,11 @@
 //     app.Usage = "say a greeting"
 //     app.Action = func(c *cli.Context) error {
 //       println("Greetings")
+//       return nil
 //     }
 //
 //     app.Run(os.Args)
 //   }
 package cli
 
-//go:generate python ./generate-flag-types cli -i flag-types.json -o flag_generated.go
+//go:generate go run flag-gen/main.go flag-gen/assets_vfsdata.go
diff --git a/vendor/github.com/codegangsta/cli/command.go b/vendor/github.com/urfave/cli/command.go
similarity index 51%
rename from vendor/github.com/codegangsta/cli/command.go
rename to vendor/github.com/urfave/cli/command.go
index 2628fbf..6c2f9ca 100644
--- a/vendor/github.com/codegangsta/cli/command.go
+++ b/vendor/github.com/urfave/cli/command.go
@@ -1,8 +1,8 @@
 package cli
 
 import (
+	"flag"
 	"fmt"
-	"io/ioutil"
 	"sort"
 	"strings"
 )
@@ -55,10 +55,33 @@ type Command struct {
 	HideHelp bool
 	// Boolean to hide this command from help or completion
 	Hidden bool
+	// Boolean to enable short-option handling so user can combine several
+	// single-character bool arguments into one
+	// i.e. foobar -o -v -> foobar -ov
+	UseShortOptionHandling bool
 
 	// Full name of command for help, defaults to full command name, including parent commands.
 	HelpName        string
 	commandNamePath []string
+
+	// CustomHelpTemplate the text template for the command help topic.
+	// cli.go uses text/template to render templates. You can
+	// render custom help text by setting this variable.
+	CustomHelpTemplate string
+}
+
+type CommandsByName []Command
+
+func (c CommandsByName) Len() int {
+	return len(c)
+}
+
+func (c CommandsByName) Less(i, j int) bool {
+	return lexicographicLess(c[i].Name, c[j].Name)
+}
+
+func (c CommandsByName) Swap(i, j int) {
+	c[i], c[j] = c[j], c[i]
 }
 
 // FullName returns the full name of the command.
@@ -75,8 +98,10 @@ type Commands []Command
 
 // Run invokes the command given the context, parses ctx.Args() to generate command-specific flags
 func (c Command) Run(ctx *Context) (err error) {
-	if len(c.Subcommands) > 0 {
-		return c.startApp(ctx)
+	if !c.SkipFlagParsing {
+		if len(c.Subcommands) > 0 {
+			return c.startApp(ctx)
+		}
 	}
 
 	if !c.HideHelp && (HelpFlag != BoolFlag{}) {
@@ -87,72 +112,27 @@ func (c Command) Run(ctx *Context) (err error) {
 		)
 	}
 
-	set, err := flagSet(c.Name, c.Flags)
-	if err != nil {
-		return err
-	}
-	set.SetOutput(ioutil.Discard)
-
-	if c.SkipFlagParsing {
-		err = set.Parse(append([]string{"--"}, ctx.Args().Tail()...))
-	} else if !c.SkipArgReorder {
-		firstFlagIndex := -1
-		terminatorIndex := -1
-		for index, arg := range ctx.Args() {
-			if arg == "--" {
-				terminatorIndex = index
-				break
-			} else if arg == "-" {
-				// Do nothing. A dash alone is not really a flag.
-				continue
-			} else if strings.HasPrefix(arg, "-") && firstFlagIndex == -1 {
-				firstFlagIndex = index
-			}
-		}
-
-		if firstFlagIndex > -1 {
-			args := ctx.Args()
-			regularArgs := make([]string, len(args[1:firstFlagIndex]))
-			copy(regularArgs, args[1:firstFlagIndex])
-
-			var flagArgs []string
-			if terminatorIndex > -1 {
-				flagArgs = args[firstFlagIndex:terminatorIndex]
-				regularArgs = append(regularArgs, args[terminatorIndex:]...)
-			} else {
-				flagArgs = args[firstFlagIndex:]
-			}
-
-			err = set.Parse(append(flagArgs, regularArgs...))
-		} else {
-			err = set.Parse(ctx.Args().Tail())
-		}
-	} else {
-		err = set.Parse(ctx.Args().Tail())
+	if ctx.App.UseShortOptionHandling {
+		c.UseShortOptionHandling = true
 	}
 
-	nerr := normalizeFlags(c.Flags, set)
-	if nerr != nil {
-		fmt.Fprintln(ctx.App.Writer, nerr)
-		fmt.Fprintln(ctx.App.Writer)
-		ShowCommandHelp(ctx, c.Name)
-		return nerr
-	}
+	set, err := c.parseFlags(ctx.Args().Tail(), ctx.shellComplete)
 
 	context := NewContext(ctx.App, set, ctx)
+	context.Command = c
 	if checkCommandCompletions(context, c.Name) {
 		return nil
 	}
 
 	if err != nil {
 		if c.OnUsageError != nil {
-			err := c.OnUsageError(ctx, err, false)
-			HandleExitCoder(err)
+			err := c.OnUsageError(context, err, false)
+			context.App.handleExitCoder(context, err)
 			return err
 		}
-		fmt.Fprintln(ctx.App.Writer, "Incorrect Usage:", err.Error())
-		fmt.Fprintln(ctx.App.Writer)
-		ShowCommandHelp(ctx, c.Name)
+		_, _ = fmt.Fprintln(context.App.Writer, "Incorrect Usage:", err.Error())
+		_, _ = fmt.Fprintln(context.App.Writer)
+		_ = ShowCommandHelp(context, c.Name)
 		return err
 	}
 
@@ -160,11 +140,17 @@ func (c Command) Run(ctx *Context) (err error) {
 		return nil
 	}
 
+	cerr := checkRequiredFlags(c.Flags, context)
+	if cerr != nil {
+		_ = ShowCommandHelp(context, c.Name)
+		return cerr
+	}
+
 	if c.After != nil {
 		defer func() {
 			afterErr := c.After(context)
 			if afterErr != nil {
-				HandleExitCoder(err)
+				context.App.handleExitCoder(context, err)
 				if err != nil {
 					err = NewMultiError(err, afterErr)
 				} else {
@@ -177,10 +163,7 @@ func (c Command) Run(ctx *Context) (err error) {
 	if c.Before != nil {
 		err = c.Before(context)
 		if err != nil {
-			fmt.Fprintln(ctx.App.Writer, err)
-			fmt.Fprintln(ctx.App.Writer)
-			ShowCommandHelp(ctx, c.Name)
-			HandleExitCoder(err)
+			context.App.handleExitCoder(context, err)
 			return err
 		}
 	}
@@ -189,15 +172,129 @@ func (c Command) Run(ctx *Context) (err error) {
 		c.Action = helpSubcommand.Action
 	}
 
-	context.Command = c
 	err = HandleAction(c.Action, context)
 
 	if err != nil {
-		HandleExitCoder(err)
+		context.App.handleExitCoder(context, err)
 	}
 	return err
 }
 
+func (c *Command) parseFlags(args Args, shellComplete bool) (*flag.FlagSet, error) {
+	if c.SkipFlagParsing {
+		set, err := c.newFlagSet()
+		if err != nil {
+			return nil, err
+		}
+
+		return set, set.Parse(append([]string{"--"}, args...))
+	}
+
+	if !c.SkipArgReorder {
+		args = reorderArgs(c.Flags, args)
+	}
+
+	set, err := c.newFlagSet()
+	if err != nil {
+		return nil, err
+	}
+
+	err = parseIter(set, c, args, shellComplete)
+	if err != nil {
+		return nil, err
+	}
+
+	err = normalizeFlags(c.Flags, set)
+	if err != nil {
+		return nil, err
+	}
+
+	return set, nil
+}
+
+func (c *Command) newFlagSet() (*flag.FlagSet, error) {
+	return flagSet(c.Name, c.Flags)
+}
+
+func (c *Command) useShortOptionHandling() bool {
+	return c.UseShortOptionHandling
+}
+
+// reorderArgs moves all flags (via reorderedArgs) before the rest of
+// the arguments (remainingArgs) as this is what flag expects.
+func reorderArgs(commandFlags []Flag, args []string) []string {
+	var remainingArgs, reorderedArgs []string
+
+	nextIndexMayContainValue := false
+	for i, arg := range args {
+
+		// if we're expecting an option-value, check if this arg is a value, in
+		// which case it should be re-ordered next to its associated flag
+		if nextIndexMayContainValue && !argIsFlag(commandFlags, arg) {
+			nextIndexMayContainValue = false
+			reorderedArgs = append(reorderedArgs, arg)
+		} else if arg == "--" {
+			// don't reorder any args after the -- delimiter As described in the POSIX spec:
+			// https://pubs.opengroup.org/onlinepubs/9699919799/basedefs/V1_chap12.html#tag_12_02
+			// > Guideline 10:
+			// >   The first -- argument that is not an option-argument should be accepted
+			// >   as a delimiter indicating the end of options. Any following arguments
+			// >   should be treated as operands, even if they begin with the '-' character.
+
+			// make sure the "--" delimiter itself is at the start
+			remainingArgs = append([]string{"--"}, remainingArgs...)
+			remainingArgs = append(remainingArgs, args[i+1:]...)
+			break
+			// checks if this is an arg that should be re-ordered
+		} else if argIsFlag(commandFlags, arg) {
+			// we have determined that this is a flag that we should re-order
+			reorderedArgs = append(reorderedArgs, arg)
+			// if this arg does not contain a "=", then the next index may contain the value for this flag
+			nextIndexMayContainValue = !strings.Contains(arg, "=")
+
+			// simply append any remaining args
+		} else {
+			remainingArgs = append(remainingArgs, arg)
+		}
+	}
+
+	return append(reorderedArgs, remainingArgs...)
+}
+
+// argIsFlag checks if an arg is one of our command flags
+func argIsFlag(commandFlags []Flag, arg string) bool {
+	if arg == "-" || arg == "--" {
+		// `-` is never a flag
+		// `--` is an option-value when following a flag, and a delimiter indicating the end of options in other cases.
+		return false
+	}
+	// flags always start with a -
+	if !strings.HasPrefix(arg, "-") {
+		return false
+	}
+	// this line turns `--flag` into `flag`
+	if strings.HasPrefix(arg, "--") {
+		arg = strings.Replace(arg, "-", "", 2)
+	}
+	// this line turns `-flag` into `flag`
+	if strings.HasPrefix(arg, "-") {
+		arg = strings.Replace(arg, "-", "", 1)
+	}
+	// this line turns `flag=value` into `flag`
+	arg = strings.Split(arg, "=")[0]
+	// look through all the flags, to see if the `arg` is one of our flags
+	for _, flag := range commandFlags {
+		for _, key := range strings.Split(flag.GetName(), ",") {
+			key := strings.TrimSpace(key)
+			if key == arg {
+				return true
+			}
+		}
+	}
+	// return false if this arg was not one of our flags
+	return false
+}
+
 // Names returns the names including short names and aliases.
 func (c Command) Names() []string {
 	names := []string{c.Name}
@@ -222,6 +319,7 @@ func (c Command) HasName(name string) bool {
 func (c Command) startApp(ctx *Context) error {
 	app := NewApp()
 	app.Metadata = ctx.App.Metadata
+	app.ExitErrHandler = ctx.App.ExitErrHandler
 	// set the name and usage
 	app.Name = fmt.Sprintf("%s %s", ctx.App.Name, c.Name)
 	if c.HelpName == "" {
@@ -230,14 +328,13 @@ func (c Command) startApp(ctx *Context) error {
 		app.HelpName = app.Name
 	}
 
-	if c.Description != "" {
-		app.Usage = c.Description
-	} else {
-		app.Usage = c.Usage
-	}
+	app.Usage = c.Usage
+	app.Description = c.Description
+	app.ArgsUsage = c.ArgsUsage
 
 	// set CommandNotFound
 	app.CommandNotFound = ctx.App.CommandNotFound
+	app.CustomAppHelpTemplate = c.CustomHelpTemplate
 
 	// set the flags and commands
 	app.Commands = c.Subcommands
@@ -250,6 +347,8 @@ func (c Command) startApp(ctx *Context) error {
 	app.Author = ctx.App.Author
 	app.Email = ctx.App.Email
 	app.Writer = ctx.App.Writer
+	app.ErrWriter = ctx.App.ErrWriter
+	app.UseShortOptionHandling = ctx.App.UseShortOptionHandling
 
 	app.categories = CommandCategories{}
 	for _, command := range c.Subcommands {
@@ -272,6 +371,7 @@ func (c Command) startApp(ctx *Context) error {
 	} else {
 		app.Action = helpSubcommand.Action
 	}
+	app.OnUsageError = c.OnUsageError
 
 	for index, cc := range app.Commands {
 		app.Commands[index].commandNamePath = []string{c.Name, cc.Name}
diff --git a/vendor/github.com/codegangsta/cli/context.go b/vendor/github.com/urfave/cli/context.go
similarity index 73%
rename from vendor/github.com/codegangsta/cli/context.go
rename to vendor/github.com/urfave/cli/context.go
index cb89e92..3adf37e 100644
--- a/vendor/github.com/codegangsta/cli/context.go
+++ b/vendor/github.com/urfave/cli/context.go
@@ -3,6 +3,8 @@ package cli
 import (
 	"errors"
 	"flag"
+	"fmt"
+	"os"
 	"reflect"
 	"strings"
 	"syscall"
@@ -39,11 +41,13 @@ func (c *Context) NumFlags() int {
 
 // Set sets a context flag to a value.
 func (c *Context) Set(name, value string) error {
+	c.setFlags = nil
 	return c.flagSet.Set(name, value)
 }
 
 // GlobalSet sets a context flag to a value on the global flagset
 func (c *Context) GlobalSet(name, value string) error {
+	globalContext(c).setFlags = nil
 	return globalContext(c).flagSet.Set(name, value)
 }
 
@@ -71,7 +75,7 @@ func (c *Context) IsSet(name string) bool {
 		// change in version 2 to add `IsSet` to the Flag interface to push the
 		// responsibility closer to where the information required to determine
 		// whether a flag is set by non-standard means such as environment
-		// variables is avaliable.
+		// variables is available.
 		//
 		// See https://github.com/urfave/cli/issues/294 for additional discussion
 		flags := c.Command.Flags
@@ -83,6 +87,14 @@ func (c *Context) IsSet(name string) bool {
 		for _, f := range flags {
 			eachName(f.GetName(), func(name string) {
 				if isSet, ok := c.setFlags[name]; isSet || !ok {
+					// Check if a flag is set
+					if isSet {
+						// If the flag is set, also set its other aliases
+						eachName(f.GetName(), func(name string) {
+							c.setFlags[name] = true
+						})
+					}
+
 					return
 				}
 
@@ -91,18 +103,26 @@ func (c *Context) IsSet(name string) bool {
 					val = val.Elem()
 				}
 
-				envVarValue := val.FieldByName("EnvVar")
-				if !envVarValue.IsValid() {
-					return
+				filePathValue := val.FieldByName("FilePath")
+				if filePathValue.IsValid() {
+					eachName(filePathValue.String(), func(filePath string) {
+						if _, err := os.Stat(filePath); err == nil {
+							c.setFlags[name] = true
+							return
+						}
+					})
 				}
 
-				eachName(envVarValue.String(), func(envVar string) {
-					envVar = strings.TrimSpace(envVar)
-					if _, ok := syscall.Getenv(envVar); ok {
-						c.setFlags[name] = true
-						return
-					}
-				})
+				envVarValue := val.FieldByName("EnvVar")
+				if envVarValue.IsValid() {
+					eachName(envVarValue.String(), func(envVar string) {
+						envVar = strings.TrimSpace(envVar)
+						if _, ok := syscall.Getenv(envVar); ok {
+							c.setFlags[name] = true
+							return
+						}
+					})
+				}
 			})
 		}
 	}
@@ -127,8 +147,8 @@ func (c *Context) GlobalIsSet(name string) bool {
 
 // FlagNames returns a slice of flag names used in this context.
 func (c *Context) FlagNames() (names []string) {
-	for _, flag := range c.Command.Flags {
-		name := strings.Split(flag.GetName(), ",")[0]
+	for _, f := range c.Command.Flags {
+		name := strings.Split(f.GetName(), ",")[0]
 		if name == "help" {
 			continue
 		}
@@ -139,8 +159,8 @@ func (c *Context) FlagNames() (names []string) {
 
 // GlobalFlagNames returns a slice of global flag names used by the app.
 func (c *Context) GlobalFlagNames() (names []string) {
-	for _, flag := range c.App.Flags {
-		name := strings.Split(flag.GetName(), ",")[0]
+	for _, f := range c.App.Flags {
+		name := strings.Split(f.GetName(), ",")[0]
 		if name == "help" || name == "version" {
 			continue
 		}
@@ -238,7 +258,7 @@ func copyFlag(name string, ff *flag.Flag, set *flag.FlagSet) {
 	switch ff.Value.(type) {
 	case *StringSlice:
 	default:
-		set.Set(name, ff.Value.String())
+		_ = set.Set(name, ff.Value.String())
 	}
 }
 
@@ -274,3 +294,55 @@ func normalizeFlags(flags []Flag, set *flag.FlagSet) error {
 	}
 	return nil
 }
+
+type requiredFlagsErr interface {
+	error
+	getMissingFlags() []string
+}
+
+type errRequiredFlags struct {
+	missingFlags []string
+}
+
+func (e *errRequiredFlags) Error() string {
+	numberOfMissingFlags := len(e.missingFlags)
+	if numberOfMissingFlags == 1 {
+		return fmt.Sprintf("Required flag %q not set", e.missingFlags[0])
+	}
+	joinedMissingFlags := strings.Join(e.missingFlags, ", ")
+	return fmt.Sprintf("Required flags %q not set", joinedMissingFlags)
+}
+
+func (e *errRequiredFlags) getMissingFlags() []string {
+	return e.missingFlags
+}
+
+func checkRequiredFlags(flags []Flag, context *Context) requiredFlagsErr {
+	var missingFlags []string
+	for _, f := range flags {
+		if rf, ok := f.(RequiredFlag); ok && rf.IsRequired() {
+			var flagPresent bool
+			var flagName string
+			for _, key := range strings.Split(f.GetName(), ",") {
+				key = strings.TrimSpace(key)
+				if len(key) > 1 {
+					flagName = key
+				}
+
+				if context.IsSet(key) {
+					flagPresent = true
+				}
+			}
+
+			if !flagPresent && flagName != "" {
+				missingFlags = append(missingFlags, flagName)
+			}
+		}
+	}
+
+	if len(missingFlags) != 0 {
+		return &errRequiredFlags{missingFlags: missingFlags}
+	}
+
+	return nil
+}
diff --git a/vendor/github.com/urfave/cli/docs.go b/vendor/github.com/urfave/cli/docs.go
new file mode 100644
index 0000000..725fa7f
--- /dev/null
+++ b/vendor/github.com/urfave/cli/docs.go
@@ -0,0 +1,151 @@
+//go:build !urfave_cli_no_docs
+// +build !urfave_cli_no_docs
+
+package cli
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"sort"
+	"strings"
+	"text/template"
+
+	"github.com/cpuguy83/go-md2man/v2/md2man"
+)
+
+// ToMarkdown creates a markdown string for the `*App`
+// The function errors if either parsing or writing of the string fails.
+func (a *App) ToMarkdown() (string, error) {
+	var w bytes.Buffer
+	if err := a.writeDocTemplate(&w); err != nil {
+		return "", err
+	}
+	return w.String(), nil
+}
+
+// ToMan creates a man page string for the `*App`
+// The function errors if either parsing or writing of the string fails.
+func (a *App) ToMan() (string, error) {
+	var w bytes.Buffer
+	if err := a.writeDocTemplate(&w); err != nil {
+		return "", err
+	}
+	man := md2man.Render(w.Bytes())
+	return string(man), nil
+}
+
+type cliTemplate struct {
+	App          *App
+	Commands     []string
+	GlobalArgs   []string
+	SynopsisArgs []string
+}
+
+func (a *App) writeDocTemplate(w io.Writer) error {
+	const name = "cli"
+	t, err := template.New(name).Parse(MarkdownDocTemplate)
+	if err != nil {
+		return err
+	}
+	return t.ExecuteTemplate(w, name, &cliTemplate{
+		App:          a,
+		Commands:     prepareCommands(a.Commands, 0),
+		GlobalArgs:   prepareArgsWithValues(a.Flags),
+		SynopsisArgs: prepareArgsSynopsis(a.Flags),
+	})
+}
+
+func prepareCommands(commands []Command, level int) []string {
+	coms := []string{}
+	for i := range commands {
+		command := &commands[i]
+		if command.Hidden {
+			continue
+		}
+		usage := ""
+		if command.Usage != "" {
+			usage = command.Usage
+		}
+
+		prepared := fmt.Sprintf("%s %s\n\n%s\n",
+			strings.Repeat("#", level+2),
+			strings.Join(command.Names(), ", "),
+			usage,
+		)
+
+		flags := prepareArgsWithValues(command.Flags)
+		if len(flags) > 0 {
+			prepared += fmt.Sprintf("\n%s", strings.Join(flags, "\n"))
+		}
+
+		coms = append(coms, prepared)
+
+		// recursevly iterate subcommands
+		if len(command.Subcommands) > 0 {
+			coms = append(
+				coms,
+				prepareCommands(command.Subcommands, level+1)...,
+			)
+		}
+	}
+
+	return coms
+}
+
+func prepareArgsWithValues(flags []Flag) []string {
+	return prepareFlags(flags, ", ", "**", "**", `""`, true)
+}
+
+func prepareArgsSynopsis(flags []Flag) []string {
+	return prepareFlags(flags, "|", "[", "]", "[value]", false)
+}
+
+func prepareFlags(
+	flags []Flag,
+	sep, opener, closer, value string,
+	addDetails bool,
+) []string {
+	args := []string{}
+	for _, f := range flags {
+		flag, ok := f.(DocGenerationFlag)
+		if !ok {
+			continue
+		}
+		modifiedArg := opener
+		for _, s := range strings.Split(flag.GetName(), ",") {
+			trimmed := strings.TrimSpace(s)
+			if len(modifiedArg) > len(opener) {
+				modifiedArg += sep
+			}
+			if len(trimmed) > 1 {
+				modifiedArg += fmt.Sprintf("--%s", trimmed)
+			} else {
+				modifiedArg += fmt.Sprintf("-%s", trimmed)
+			}
+		}
+		modifiedArg += closer
+		if flag.TakesValue() {
+			modifiedArg += fmt.Sprintf("=%s", value)
+		}
+
+		if addDetails {
+			modifiedArg += flagDetails(flag)
+		}
+
+		args = append(args, modifiedArg+"\n")
+
+	}
+	sort.Strings(args)
+	return args
+}
+
+// flagDetails returns a string containing the flags metadata
+func flagDetails(flag DocGenerationFlag) string {
+	description := flag.GetUsage()
+	value := flag.GetValue()
+	if value != "" {
+		description += " (default: " + value + ")"
+	}
+	return ": " + description
+}
diff --git a/vendor/github.com/codegangsta/cli/errors.go b/vendor/github.com/urfave/cli/errors.go
similarity index 83%
rename from vendor/github.com/codegangsta/cli/errors.go
rename to vendor/github.com/urfave/cli/errors.go
index 0206ff4..562b295 100644
--- a/vendor/github.com/codegangsta/cli/errors.go
+++ b/vendor/github.com/urfave/cli/errors.go
@@ -74,7 +74,7 @@ func (ee *ExitError) ExitCode() int {
 // HandleExitCoder checks if the error fulfills the ExitCoder interface, and if
 // so prints the error to stderr (if it is non-empty) and calls OsExiter with the
 // given exit code.  If the given error is a MultiError, then this func is
-// called on all members of the Errors slice.
+// called on all members of the Errors slice and calls OsExiter with the last exit code.
 func HandleExitCoder(err error) {
 	if err == nil {
 		return
@@ -93,18 +93,23 @@ func HandleExitCoder(err error) {
 	}
 
 	if multiErr, ok := err.(MultiError); ok {
-		for _, merr := range multiErr.Errors {
-			HandleExitCoder(merr)
-		}
+		code := handleMultiError(multiErr)
+		OsExiter(code)
 		return
 	}
+}
 
-	if err.Error() != "" {
-		if _, ok := err.(ErrorFormatter); ok {
-			fmt.Fprintf(ErrWriter, "%+v\n", err)
+func handleMultiError(multiErr MultiError) int {
+	code := 1
+	for _, merr := range multiErr.Errors {
+		if multiErr2, ok := merr.(MultiError); ok {
+			code = handleMultiError(multiErr2)
 		} else {
-			fmt.Fprintln(ErrWriter, err)
+			fmt.Fprintln(ErrWriter, merr)
+			if exitErr, ok := merr.(ExitCoder); ok {
+				code = exitErr.ExitCode()
+			}
 		}
 	}
-	OsExiter(1)
+	return code
 }
diff --git a/vendor/github.com/urfave/cli/fish.go b/vendor/github.com/urfave/cli/fish.go
new file mode 100644
index 0000000..cf183af
--- /dev/null
+++ b/vendor/github.com/urfave/cli/fish.go
@@ -0,0 +1,194 @@
+package cli
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"strings"
+	"text/template"
+)
+
+// ToFishCompletion creates a fish completion string for the `*App`
+// The function errors if either parsing or writing of the string fails.
+func (a *App) ToFishCompletion() (string, error) {
+	var w bytes.Buffer
+	if err := a.writeFishCompletionTemplate(&w); err != nil {
+		return "", err
+	}
+	return w.String(), nil
+}
+
+type fishCompletionTemplate struct {
+	App         *App
+	Completions []string
+	AllCommands []string
+}
+
+func (a *App) writeFishCompletionTemplate(w io.Writer) error {
+	const name = "cli"
+	t, err := template.New(name).Parse(FishCompletionTemplate)
+	if err != nil {
+		return err
+	}
+	allCommands := []string{}
+
+	// Add global flags
+	completions := a.prepareFishFlags(a.VisibleFlags(), allCommands)
+
+	// Add help flag
+	if !a.HideHelp {
+		completions = append(
+			completions,
+			a.prepareFishFlags([]Flag{HelpFlag}, allCommands)...,
+		)
+	}
+
+	// Add version flag
+	if !a.HideVersion {
+		completions = append(
+			completions,
+			a.prepareFishFlags([]Flag{VersionFlag}, allCommands)...,
+		)
+	}
+
+	// Add commands and their flags
+	completions = append(
+		completions,
+		a.prepareFishCommands(a.VisibleCommands(), &allCommands, []string{})...,
+	)
+
+	return t.ExecuteTemplate(w, name, &fishCompletionTemplate{
+		App:         a,
+		Completions: completions,
+		AllCommands: allCommands,
+	})
+}
+
+func (a *App) prepareFishCommands(commands []Command, allCommands *[]string, previousCommands []string) []string {
+	completions := []string{}
+	for i := range commands {
+		command := &commands[i]
+
+		if command.Hidden {
+			continue
+		}
+
+		var completion strings.Builder
+		completion.WriteString(fmt.Sprintf(
+			"complete -r -c %s -n '%s' -a '%s'",
+			a.Name,
+			a.fishSubcommandHelper(previousCommands),
+			strings.Join(command.Names(), " "),
+		))
+
+		if command.Usage != "" {
+			completion.WriteString(fmt.Sprintf(" -d '%s'",
+				escapeSingleQuotes(command.Usage)))
+		}
+
+		if !command.HideHelp {
+			completions = append(
+				completions,
+				a.prepareFishFlags([]Flag{HelpFlag}, command.Names())...,
+			)
+		}
+
+		*allCommands = append(*allCommands, command.Names()...)
+		completions = append(completions, completion.String())
+		completions = append(
+			completions,
+			a.prepareFishFlags(command.Flags, command.Names())...,
+		)
+
+		// recursevly iterate subcommands
+		if len(command.Subcommands) > 0 {
+			completions = append(
+				completions,
+				a.prepareFishCommands(
+					command.Subcommands, allCommands, command.Names(),
+				)...,
+			)
+		}
+	}
+
+	return completions
+}
+
+func (a *App) prepareFishFlags(flags []Flag, previousCommands []string) []string {
+	completions := []string{}
+	for _, f := range flags {
+		flag, ok := f.(DocGenerationFlag)
+		if !ok {
+			continue
+		}
+
+		completion := &strings.Builder{}
+		completion.WriteString(fmt.Sprintf(
+			"complete -c %s -n '%s'",
+			a.Name,
+			a.fishSubcommandHelper(previousCommands),
+		))
+
+		fishAddFileFlag(f, completion)
+
+		for idx, opt := range strings.Split(flag.GetName(), ",") {
+			if idx == 0 {
+				completion.WriteString(fmt.Sprintf(
+					" -l %s", strings.TrimSpace(opt),
+				))
+			} else {
+				completion.WriteString(fmt.Sprintf(
+					" -s %s", strings.TrimSpace(opt),
+				))
+
+			}
+		}
+
+		if flag.TakesValue() {
+			completion.WriteString(" -r")
+		}
+
+		if flag.GetUsage() != "" {
+			completion.WriteString(fmt.Sprintf(" -d '%s'",
+				escapeSingleQuotes(flag.GetUsage())))
+		}
+
+		completions = append(completions, completion.String())
+	}
+
+	return completions
+}
+
+func fishAddFileFlag(flag Flag, completion *strings.Builder) {
+	switch f := flag.(type) {
+	case GenericFlag:
+		if f.TakesFile {
+			return
+		}
+	case StringFlag:
+		if f.TakesFile {
+			return
+		}
+	case StringSliceFlag:
+		if f.TakesFile {
+			return
+		}
+	}
+	completion.WriteString(" -f")
+}
+
+func (a *App) fishSubcommandHelper(allCommands []string) string {
+	fishHelper := fmt.Sprintf("__fish_%s_no_subcommand", a.Name)
+	if len(allCommands) > 0 {
+		fishHelper = fmt.Sprintf(
+			"__fish_seen_subcommand_from %s",
+			strings.Join(allCommands, " "),
+		)
+	}
+	return fishHelper
+
+}
+
+func escapeSingleQuotes(input string) string {
+	return strings.Replace(input, `'`, `\'`, -1)
+}
diff --git a/vendor/github.com/urfave/cli/flag.go b/vendor/github.com/urfave/cli/flag.go
new file mode 100644
index 0000000..5b7ae6c
--- /dev/null
+++ b/vendor/github.com/urfave/cli/flag.go
@@ -0,0 +1,348 @@
+package cli
+
+import (
+	"flag"
+	"fmt"
+	"io/ioutil"
+	"reflect"
+	"runtime"
+	"strconv"
+	"strings"
+	"syscall"
+)
+
+const defaultPlaceholder = "value"
+
+// BashCompletionFlag enables bash-completion for all commands and subcommands
+var BashCompletionFlag Flag = BoolFlag{
+	Name:   "generate-bash-completion",
+	Hidden: true,
+}
+
+// VersionFlag prints the version for the application
+var VersionFlag Flag = BoolFlag{
+	Name:  "version, v",
+	Usage: "print the version",
+}
+
+// HelpFlag prints the help for all commands and subcommands
+// Set to the zero value (BoolFlag{}) to disable flag -- keeps subcommand
+// unless HideHelp is set to true)
+var HelpFlag Flag = BoolFlag{
+	Name:  "help, h",
+	Usage: "show help",
+}
+
+// FlagStringer converts a flag definition to a string. This is used by help
+// to display a flag.
+var FlagStringer FlagStringFunc = stringifyFlag
+
+// FlagNamePrefixer converts a full flag name and its placeholder into the help
+// message flag prefix. This is used by the default FlagStringer.
+var FlagNamePrefixer FlagNamePrefixFunc = prefixedNames
+
+// FlagEnvHinter annotates flag help message with the environment variable
+// details. This is used by the default FlagStringer.
+var FlagEnvHinter FlagEnvHintFunc = withEnvHint
+
+// FlagFileHinter annotates flag help message with the environment variable
+// details. This is used by the default FlagStringer.
+var FlagFileHinter FlagFileHintFunc = withFileHint
+
+// FlagsByName is a slice of Flag.
+type FlagsByName []Flag
+
+func (f FlagsByName) Len() int {
+	return len(f)
+}
+
+func (f FlagsByName) Less(i, j int) bool {
+	return lexicographicLess(f[i].GetName(), f[j].GetName())
+}
+
+func (f FlagsByName) Swap(i, j int) {
+	f[i], f[j] = f[j], f[i]
+}
+
+// Flag is a common interface related to parsing flags in cli.
+// For more advanced flag parsing techniques, it is recommended that
+// this interface be implemented.
+type Flag interface {
+	fmt.Stringer
+	// Apply Flag settings to the given flag set
+	Apply(*flag.FlagSet)
+	GetName() string
+}
+
+// RequiredFlag is an interface that allows us to mark flags as required
+// it allows flags required flags to be backwards compatible with the Flag interface
+type RequiredFlag interface {
+	Flag
+
+	IsRequired() bool
+}
+
+// DocGenerationFlag is an interface that allows documentation generation for the flag
+type DocGenerationFlag interface {
+	Flag
+
+	// TakesValue returns true if the flag takes a value, otherwise false
+	TakesValue() bool
+
+	// GetUsage returns the usage string for the flag
+	GetUsage() string
+
+	// GetValue returns the flags value as string representation and an empty
+	// string if the flag takes no value at all.
+	GetValue() string
+}
+
+// errorableFlag is an interface that allows us to return errors during apply
+// it allows flags defined in this library to return errors in a fashion backwards compatible
+// TODO remove in v2 and modify the existing Flag interface to return errors
+type errorableFlag interface {
+	Flag
+
+	ApplyWithError(*flag.FlagSet) error
+}
+
+func flagSet(name string, flags []Flag) (*flag.FlagSet, error) {
+	set := flag.NewFlagSet(name, flag.ContinueOnError)
+
+	for _, f := range flags {
+		//TODO remove in v2 when errorableFlag is removed
+		if ef, ok := f.(errorableFlag); ok {
+			if err := ef.ApplyWithError(set); err != nil {
+				return nil, err
+			}
+		} else {
+			f.Apply(set)
+		}
+	}
+	set.SetOutput(ioutil.Discard)
+	return set, nil
+}
+
+func eachName(longName string, fn func(string)) {
+	parts := strings.Split(longName, ",")
+	for _, name := range parts {
+		name = strings.Trim(name, " ")
+		fn(name)
+	}
+}
+
+func visibleFlags(fl []Flag) []Flag {
+	var visible []Flag
+	for _, f := range fl {
+		field := flagValue(f).FieldByName("Hidden")
+		if !field.IsValid() || !field.Bool() {
+			visible = append(visible, f)
+		}
+	}
+	return visible
+}
+
+func prefixFor(name string) (prefix string) {
+	if len(name) == 1 {
+		prefix = "-"
+	} else {
+		prefix = "--"
+	}
+
+	return
+}
+
+// Returns the placeholder, if any, and the unquoted usage string.
+func unquoteUsage(usage string) (string, string) {
+	for i := 0; i < len(usage); i++ {
+		if usage[i] == '`' {
+			for j := i + 1; j < len(usage); j++ {
+				if usage[j] == '`' {
+					name := usage[i+1 : j]
+					usage = usage[:i] + name + usage[j+1:]
+					return name, usage
+				}
+			}
+			break
+		}
+	}
+	return "", usage
+}
+
+func prefixedNames(fullName, placeholder string) string {
+	var prefixed string
+	parts := strings.Split(fullName, ",")
+	for i, name := range parts {
+		name = strings.Trim(name, " ")
+		prefixed += prefixFor(name) + name
+		if placeholder != "" {
+			prefixed += " " + placeholder
+		}
+		if i < len(parts)-1 {
+			prefixed += ", "
+		}
+	}
+	return prefixed
+}
+
+func withEnvHint(envVar, str string) string {
+	envText := ""
+	if envVar != "" {
+		prefix := "$"
+		suffix := ""
+		sep := ", $"
+		if runtime.GOOS == "windows" {
+			prefix = "%"
+			suffix = "%"
+			sep = "%, %"
+		}
+		envText = " [" + prefix + strings.Join(strings.Split(envVar, ","), sep) + suffix + "]"
+	}
+	return str + envText
+}
+
+func withFileHint(filePath, str string) string {
+	fileText := ""
+	if filePath != "" {
+		fileText = fmt.Sprintf(" [%s]", filePath)
+	}
+	return str + fileText
+}
+
+func flagValue(f Flag) reflect.Value {
+	fv := reflect.ValueOf(f)
+	for fv.Kind() == reflect.Ptr {
+		fv = reflect.Indirect(fv)
+	}
+	return fv
+}
+
+func stringifyFlag(f Flag) string {
+	fv := flagValue(f)
+
+	switch f.(type) {
+	case IntSliceFlag:
+		return FlagFileHinter(
+			fv.FieldByName("FilePath").String(),
+			FlagEnvHinter(
+				fv.FieldByName("EnvVar").String(),
+				stringifyIntSliceFlag(f.(IntSliceFlag)),
+			),
+		)
+	case Int64SliceFlag:
+		return FlagFileHinter(
+			fv.FieldByName("FilePath").String(),
+			FlagEnvHinter(
+				fv.FieldByName("EnvVar").String(),
+				stringifyInt64SliceFlag(f.(Int64SliceFlag)),
+			),
+		)
+	case StringSliceFlag:
+		return FlagFileHinter(
+			fv.FieldByName("FilePath").String(),
+			FlagEnvHinter(
+				fv.FieldByName("EnvVar").String(),
+				stringifyStringSliceFlag(f.(StringSliceFlag)),
+			),
+		)
+	}
+
+	placeholder, usage := unquoteUsage(fv.FieldByName("Usage").String())
+
+	needsPlaceholder := false
+	defaultValueString := ""
+
+	if val := fv.FieldByName("Value"); val.IsValid() {
+		needsPlaceholder = true
+		defaultValueString = fmt.Sprintf(" (default: %v)", val.Interface())
+
+		if val.Kind() == reflect.String && val.String() != "" {
+			defaultValueString = fmt.Sprintf(" (default: %q)", val.String())
+		}
+	}
+
+	if defaultValueString == " (default: )" {
+		defaultValueString = ""
+	}
+
+	if needsPlaceholder && placeholder == "" {
+		placeholder = defaultPlaceholder
+	}
+
+	usageWithDefault := strings.TrimSpace(usage + defaultValueString)
+
+	return FlagFileHinter(
+		fv.FieldByName("FilePath").String(),
+		FlagEnvHinter(
+			fv.FieldByName("EnvVar").String(),
+			FlagNamePrefixer(fv.FieldByName("Name").String(), placeholder)+"\t"+usageWithDefault,
+		),
+	)
+}
+
+func stringifyIntSliceFlag(f IntSliceFlag) string {
+	var defaultVals []string
+	if f.Value != nil && len(f.Value.Value()) > 0 {
+		for _, i := range f.Value.Value() {
+			defaultVals = append(defaultVals, strconv.Itoa(i))
+		}
+	}
+
+	return stringifySliceFlag(f.Usage, f.Name, defaultVals)
+}
+
+func stringifyInt64SliceFlag(f Int64SliceFlag) string {
+	var defaultVals []string
+	if f.Value != nil && len(f.Value.Value()) > 0 {
+		for _, i := range f.Value.Value() {
+			defaultVals = append(defaultVals, strconv.FormatInt(i, 10))
+		}
+	}
+
+	return stringifySliceFlag(f.Usage, f.Name, defaultVals)
+}
+
+func stringifyStringSliceFlag(f StringSliceFlag) string {
+	var defaultVals []string
+	if f.Value != nil && len(f.Value.Value()) > 0 {
+		for _, s := range f.Value.Value() {
+			if len(s) > 0 {
+				defaultVals = append(defaultVals, strconv.Quote(s))
+			}
+		}
+	}
+
+	return stringifySliceFlag(f.Usage, f.Name, defaultVals)
+}
+
+func stringifySliceFlag(usage, name string, defaultVals []string) string {
+	placeholder, usage := unquoteUsage(usage)
+	if placeholder == "" {
+		placeholder = defaultPlaceholder
+	}
+
+	defaultVal := ""
+	if len(defaultVals) > 0 {
+		defaultVal = fmt.Sprintf(" (default: %s)", strings.Join(defaultVals, ", "))
+	}
+
+	usageWithDefault := strings.TrimSpace(usage + defaultVal)
+	return FlagNamePrefixer(name, placeholder) + "\t" + usageWithDefault
+}
+
+func flagFromFileEnv(filePath, envName string) (val string, ok bool) {
+	for _, envVar := range strings.Split(envName, ",") {
+		envVar = strings.TrimSpace(envVar)
+		if envVal, ok := syscall.Getenv(envVar); ok {
+			return envVal, true
+		}
+	}
+	for _, fileVar := range strings.Split(filePath, ",") {
+		if fileVar != "" {
+			if data, err := ioutil.ReadFile(fileVar); err == nil {
+				return string(data), true
+			}
+		}
+	}
+	return "", false
+}
diff --git a/vendor/github.com/urfave/cli/flag_bool.go b/vendor/github.com/urfave/cli/flag_bool.go
new file mode 100644
index 0000000..2499b0b
--- /dev/null
+++ b/vendor/github.com/urfave/cli/flag_bool.go
@@ -0,0 +1,109 @@
+package cli
+
+import (
+	"flag"
+	"fmt"
+	"strconv"
+)
+
+// BoolFlag is a flag with type bool
+type BoolFlag struct {
+	Name        string
+	Usage       string
+	EnvVar      string
+	FilePath    string
+	Required    bool
+	Hidden      bool
+	Destination *bool
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f BoolFlag) String() string {
+	return FlagStringer(f)
+}
+
+// GetName returns the name of the flag
+func (f BoolFlag) GetName() string {
+	return f.Name
+}
+
+// IsRequired returns whether or not the flag is required
+func (f BoolFlag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f BoolFlag) TakesValue() bool {
+	return false
+}
+
+// GetUsage returns the usage string for the flag
+func (f BoolFlag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f BoolFlag) GetValue() string {
+	return ""
+}
+
+// Bool looks up the value of a local BoolFlag, returns
+// false if not found
+func (c *Context) Bool(name string) bool {
+	return lookupBool(name, c.flagSet)
+}
+
+// GlobalBool looks up the value of a global BoolFlag, returns
+// false if not found
+func (c *Context) GlobalBool(name string) bool {
+	if fs := lookupGlobalFlagSet(name, c); fs != nil {
+		return lookupBool(name, fs)
+	}
+	return false
+}
+
+// Apply populates the flag given the flag set and environment
+// Ignores errors
+func (f BoolFlag) Apply(set *flag.FlagSet) {
+	_ = f.ApplyWithError(set)
+}
+
+// ApplyWithError populates the flag given the flag set and environment
+func (f BoolFlag) ApplyWithError(set *flag.FlagSet) error {
+	val := false
+	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
+		if envVal == "" {
+			val = false
+		} else {
+			envValBool, err := strconv.ParseBool(envVal)
+			if err != nil {
+				return fmt.Errorf("could not parse %s as bool value for flag %s: %s", envVal, f.Name, err)
+			}
+			val = envValBool
+		}
+	}
+
+	eachName(f.Name, func(name string) {
+		if f.Destination != nil {
+			set.BoolVar(f.Destination, name, val, f.Usage)
+			return
+		}
+		set.Bool(name, val, f.Usage)
+	})
+
+	return nil
+}
+
+func lookupBool(name string, set *flag.FlagSet) bool {
+	f := set.Lookup(name)
+	if f != nil {
+		parsed, err := strconv.ParseBool(f.Value.String())
+		if err != nil {
+			return false
+		}
+		return parsed
+	}
+	return false
+}
diff --git a/vendor/github.com/urfave/cli/flag_bool_t.go b/vendor/github.com/urfave/cli/flag_bool_t.go
new file mode 100644
index 0000000..cd0888f
--- /dev/null
+++ b/vendor/github.com/urfave/cli/flag_bool_t.go
@@ -0,0 +1,110 @@
+package cli
+
+import (
+	"flag"
+	"fmt"
+	"strconv"
+)
+
+// BoolTFlag is a flag with type bool that is true by default
+type BoolTFlag struct {
+	Name        string
+	Usage       string
+	EnvVar      string
+	FilePath    string
+	Required    bool
+	Hidden      bool
+	Destination *bool
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f BoolTFlag) String() string {
+	return FlagStringer(f)
+}
+
+// GetName returns the name of the flag
+func (f BoolTFlag) GetName() string {
+	return f.Name
+}
+
+// IsRequired returns whether or not the flag is required
+func (f BoolTFlag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f BoolTFlag) TakesValue() bool {
+	return false
+}
+
+// GetUsage returns the usage string for the flag
+func (f BoolTFlag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f BoolTFlag) GetValue() string {
+	return ""
+}
+
+// BoolT looks up the value of a local BoolTFlag, returns
+// false if not found
+func (c *Context) BoolT(name string) bool {
+	return lookupBoolT(name, c.flagSet)
+}
+
+// GlobalBoolT looks up the value of a global BoolTFlag, returns
+// false if not found
+func (c *Context) GlobalBoolT(name string) bool {
+	if fs := lookupGlobalFlagSet(name, c); fs != nil {
+		return lookupBoolT(name, fs)
+	}
+	return false
+}
+
+// Apply populates the flag given the flag set and environment
+// Ignores errors
+func (f BoolTFlag) Apply(set *flag.FlagSet) {
+	_ = f.ApplyWithError(set)
+}
+
+// ApplyWithError populates the flag given the flag set and environment
+func (f BoolTFlag) ApplyWithError(set *flag.FlagSet) error {
+	val := true
+
+	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
+		if envVal == "" {
+			val = false
+		} else {
+			envValBool, err := strconv.ParseBool(envVal)
+			if err != nil {
+				return fmt.Errorf("could not parse %s as bool value for flag %s: %s", envVal, f.Name, err)
+			}
+			val = envValBool
+		}
+	}
+
+	eachName(f.Name, func(name string) {
+		if f.Destination != nil {
+			set.BoolVar(f.Destination, name, val, f.Usage)
+			return
+		}
+		set.Bool(name, val, f.Usage)
+	})
+
+	return nil
+}
+
+func lookupBoolT(name string, set *flag.FlagSet) bool {
+	f := set.Lookup(name)
+	if f != nil {
+		parsed, err := strconv.ParseBool(f.Value.String())
+		if err != nil {
+			return false
+		}
+		return parsed
+	}
+	return false
+}
diff --git a/vendor/github.com/urfave/cli/flag_duration.go b/vendor/github.com/urfave/cli/flag_duration.go
new file mode 100644
index 0000000..df4ade5
--- /dev/null
+++ b/vendor/github.com/urfave/cli/flag_duration.go
@@ -0,0 +1,106 @@
+package cli
+
+import (
+	"flag"
+	"fmt"
+	"time"
+)
+
+// DurationFlag is a flag with type time.Duration (see https://golang.org/pkg/time/#ParseDuration)
+type DurationFlag struct {
+	Name        string
+	Usage       string
+	EnvVar      string
+	FilePath    string
+	Required    bool
+	Hidden      bool
+	Value       time.Duration
+	Destination *time.Duration
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f DurationFlag) String() string {
+	return FlagStringer(f)
+}
+
+// GetName returns the name of the flag
+func (f DurationFlag) GetName() string {
+	return f.Name
+}
+
+// IsRequired returns whether or not the flag is required
+func (f DurationFlag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f DurationFlag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f DurationFlag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f DurationFlag) GetValue() string {
+	return f.Value.String()
+}
+
+// Duration looks up the value of a local DurationFlag, returns
+// 0 if not found
+func (c *Context) Duration(name string) time.Duration {
+	return lookupDuration(name, c.flagSet)
+}
+
+// GlobalDuration looks up the value of a global DurationFlag, returns
+// 0 if not found
+func (c *Context) GlobalDuration(name string) time.Duration {
+	if fs := lookupGlobalFlagSet(name, c); fs != nil {
+		return lookupDuration(name, fs)
+	}
+	return 0
+}
+
+// Apply populates the flag given the flag set and environment
+// Ignores errors
+func (f DurationFlag) Apply(set *flag.FlagSet) {
+	_ = f.ApplyWithError(set)
+}
+
+// ApplyWithError populates the flag given the flag set and environment
+func (f DurationFlag) ApplyWithError(set *flag.FlagSet) error {
+	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
+		envValDuration, err := time.ParseDuration(envVal)
+		if err != nil {
+			return fmt.Errorf("could not parse %s as duration for flag %s: %s", envVal, f.Name, err)
+		}
+
+		f.Value = envValDuration
+	}
+
+	eachName(f.Name, func(name string) {
+		if f.Destination != nil {
+			set.DurationVar(f.Destination, name, f.Value, f.Usage)
+			return
+		}
+		set.Duration(name, f.Value, f.Usage)
+	})
+
+	return nil
+}
+
+func lookupDuration(name string, set *flag.FlagSet) time.Duration {
+	f := set.Lookup(name)
+	if f != nil {
+		parsed, err := time.ParseDuration(f.Value.String())
+		if err != nil {
+			return 0
+		}
+		return parsed
+	}
+	return 0
+}
diff --git a/vendor/github.com/urfave/cli/flag_float64.go b/vendor/github.com/urfave/cli/flag_float64.go
new file mode 100644
index 0000000..65398d3
--- /dev/null
+++ b/vendor/github.com/urfave/cli/flag_float64.go
@@ -0,0 +1,106 @@
+package cli
+
+import (
+	"flag"
+	"fmt"
+	"strconv"
+)
+
+// Float64Flag is a flag with type float64
+type Float64Flag struct {
+	Name        string
+	Usage       string
+	EnvVar      string
+	FilePath    string
+	Required    bool
+	Hidden      bool
+	Value       float64
+	Destination *float64
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f Float64Flag) String() string {
+	return FlagStringer(f)
+}
+
+// GetName returns the name of the flag
+func (f Float64Flag) GetName() string {
+	return f.Name
+}
+
+// IsRequired returns whether or not the flag is required
+func (f Float64Flag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f Float64Flag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f Float64Flag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f Float64Flag) GetValue() string {
+	return fmt.Sprintf("%f", f.Value)
+}
+
+// Float64 looks up the value of a local Float64Flag, returns
+// 0 if not found
+func (c *Context) Float64(name string) float64 {
+	return lookupFloat64(name, c.flagSet)
+}
+
+// GlobalFloat64 looks up the value of a global Float64Flag, returns
+// 0 if not found
+func (c *Context) GlobalFloat64(name string) float64 {
+	if fs := lookupGlobalFlagSet(name, c); fs != nil {
+		return lookupFloat64(name, fs)
+	}
+	return 0
+}
+
+// Apply populates the flag given the flag set and environment
+// Ignores errors
+func (f Float64Flag) Apply(set *flag.FlagSet) {
+	_ = f.ApplyWithError(set)
+}
+
+// ApplyWithError populates the flag given the flag set and environment
+func (f Float64Flag) ApplyWithError(set *flag.FlagSet) error {
+	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
+		envValFloat, err := strconv.ParseFloat(envVal, 10)
+		if err != nil {
+			return fmt.Errorf("could not parse %s as float64 value for flag %s: %s", envVal, f.Name, err)
+		}
+
+		f.Value = envValFloat
+	}
+
+	eachName(f.Name, func(name string) {
+		if f.Destination != nil {
+			set.Float64Var(f.Destination, name, f.Value, f.Usage)
+			return
+		}
+		set.Float64(name, f.Value, f.Usage)
+	})
+
+	return nil
+}
+
+func lookupFloat64(name string, set *flag.FlagSet) float64 {
+	f := set.Lookup(name)
+	if f != nil {
+		parsed, err := strconv.ParseFloat(f.Value.String(), 64)
+		if err != nil {
+			return 0
+		}
+		return parsed
+	}
+	return 0
+}
diff --git a/vendor/github.com/urfave/cli/flag_generic.go b/vendor/github.com/urfave/cli/flag_generic.go
new file mode 100644
index 0000000..c43dae7
--- /dev/null
+++ b/vendor/github.com/urfave/cli/flag_generic.go
@@ -0,0 +1,110 @@
+package cli
+
+import (
+	"flag"
+	"fmt"
+)
+
+// Generic is a generic parseable type identified by a specific flag
+type Generic interface {
+	Set(value string) error
+	String() string
+}
+
+// GenericFlag is a flag with type Generic
+type GenericFlag struct {
+	Name      string
+	Usage     string
+	EnvVar    string
+	FilePath  string
+	Required  bool
+	Hidden    bool
+	TakesFile bool
+	Value     Generic
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f GenericFlag) String() string {
+	return FlagStringer(f)
+}
+
+// GetName returns the name of the flag
+func (f GenericFlag) GetName() string {
+	return f.Name
+}
+
+// IsRequired returns whether or not the flag is required
+func (f GenericFlag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f GenericFlag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f GenericFlag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f GenericFlag) GetValue() string {
+	if f.Value != nil {
+		return f.Value.String()
+	}
+	return ""
+}
+
+// Apply takes the flagset and calls Set on the generic flag with the value
+// provided by the user for parsing by the flag
+// Ignores parsing errors
+func (f GenericFlag) Apply(set *flag.FlagSet) {
+	_ = f.ApplyWithError(set)
+}
+
+// ApplyWithError takes the flagset and calls Set on the generic flag with the value
+// provided by the user for parsing by the flag
+func (f GenericFlag) ApplyWithError(set *flag.FlagSet) error {
+	val := f.Value
+	if fileEnvVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
+		if err := val.Set(fileEnvVal); err != nil {
+			return fmt.Errorf("could not parse %s as value for flag %s: %s", fileEnvVal, f.Name, err)
+		}
+	}
+
+	eachName(f.Name, func(name string) {
+		set.Var(f.Value, name, f.Usage)
+	})
+
+	return nil
+}
+
+// Generic looks up the value of a local GenericFlag, returns
+// nil if not found
+func (c *Context) Generic(name string) interface{} {
+	return lookupGeneric(name, c.flagSet)
+}
+
+// GlobalGeneric looks up the value of a global GenericFlag, returns
+// nil if not found
+func (c *Context) GlobalGeneric(name string) interface{} {
+	if fs := lookupGlobalFlagSet(name, c); fs != nil {
+		return lookupGeneric(name, fs)
+	}
+	return nil
+}
+
+func lookupGeneric(name string, set *flag.FlagSet) interface{} {
+	f := set.Lookup(name)
+	if f != nil {
+		parsed, err := f.Value, error(nil)
+		if err != nil {
+			return nil
+		}
+		return parsed
+	}
+	return nil
+}
diff --git a/vendor/github.com/urfave/cli/flag_int.go b/vendor/github.com/urfave/cli/flag_int.go
new file mode 100644
index 0000000..bae32e2
--- /dev/null
+++ b/vendor/github.com/urfave/cli/flag_int.go
@@ -0,0 +1,105 @@
+package cli
+
+import (
+	"flag"
+	"fmt"
+	"strconv"
+)
+
+// IntFlag is a flag with type int
+type IntFlag struct {
+	Name        string
+	Usage       string
+	EnvVar      string
+	FilePath    string
+	Required    bool
+	Hidden      bool
+	Value       int
+	Destination *int
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f IntFlag) String() string {
+	return FlagStringer(f)
+}
+
+// GetName returns the name of the flag
+func (f IntFlag) GetName() string {
+	return f.Name
+}
+
+// IsRequired returns whether or not the flag is required
+func (f IntFlag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f IntFlag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f IntFlag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f IntFlag) GetValue() string {
+	return fmt.Sprintf("%d", f.Value)
+}
+
+// Apply populates the flag given the flag set and environment
+// Ignores errors
+func (f IntFlag) Apply(set *flag.FlagSet) {
+	_ = f.ApplyWithError(set)
+}
+
+// ApplyWithError populates the flag given the flag set and environment
+func (f IntFlag) ApplyWithError(set *flag.FlagSet) error {
+	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
+		envValInt, err := strconv.ParseInt(envVal, 0, 64)
+		if err != nil {
+			return fmt.Errorf("could not parse %s as int value for flag %s: %s", envVal, f.Name, err)
+		}
+		f.Value = int(envValInt)
+	}
+
+	eachName(f.Name, func(name string) {
+		if f.Destination != nil {
+			set.IntVar(f.Destination, name, f.Value, f.Usage)
+			return
+		}
+		set.Int(name, f.Value, f.Usage)
+	})
+
+	return nil
+}
+
+// Int looks up the value of a local IntFlag, returns
+// 0 if not found
+func (c *Context) Int(name string) int {
+	return lookupInt(name, c.flagSet)
+}
+
+// GlobalInt looks up the value of a global IntFlag, returns
+// 0 if not found
+func (c *Context) GlobalInt(name string) int {
+	if fs := lookupGlobalFlagSet(name, c); fs != nil {
+		return lookupInt(name, fs)
+	}
+	return 0
+}
+
+func lookupInt(name string, set *flag.FlagSet) int {
+	f := set.Lookup(name)
+	if f != nil {
+		parsed, err := strconv.ParseInt(f.Value.String(), 0, 64)
+		if err != nil {
+			return 0
+		}
+		return int(parsed)
+	}
+	return 0
+}
diff --git a/vendor/github.com/urfave/cli/flag_int64.go b/vendor/github.com/urfave/cli/flag_int64.go
new file mode 100644
index 0000000..aaafbe9
--- /dev/null
+++ b/vendor/github.com/urfave/cli/flag_int64.go
@@ -0,0 +1,106 @@
+package cli
+
+import (
+	"flag"
+	"fmt"
+	"strconv"
+)
+
+// Int64Flag is a flag with type int64
+type Int64Flag struct {
+	Name        string
+	Usage       string
+	EnvVar      string
+	FilePath    string
+	Required    bool
+	Hidden      bool
+	Value       int64
+	Destination *int64
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f Int64Flag) String() string {
+	return FlagStringer(f)
+}
+
+// GetName returns the name of the flag
+func (f Int64Flag) GetName() string {
+	return f.Name
+}
+
+// IsRequired returns whether or not the flag is required
+func (f Int64Flag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f Int64Flag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f Int64Flag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f Int64Flag) GetValue() string {
+	return fmt.Sprintf("%d", f.Value)
+}
+
+// Apply populates the flag given the flag set and environment
+// Ignores errors
+func (f Int64Flag) Apply(set *flag.FlagSet) {
+	_ = f.ApplyWithError(set)
+}
+
+// ApplyWithError populates the flag given the flag set and environment
+func (f Int64Flag) ApplyWithError(set *flag.FlagSet) error {
+	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
+		envValInt, err := strconv.ParseInt(envVal, 0, 64)
+		if err != nil {
+			return fmt.Errorf("could not parse %s as int value for flag %s: %s", envVal, f.Name, err)
+		}
+
+		f.Value = envValInt
+	}
+
+	eachName(f.Name, func(name string) {
+		if f.Destination != nil {
+			set.Int64Var(f.Destination, name, f.Value, f.Usage)
+			return
+		}
+		set.Int64(name, f.Value, f.Usage)
+	})
+
+	return nil
+}
+
+// Int64 looks up the value of a local Int64Flag, returns
+// 0 if not found
+func (c *Context) Int64(name string) int64 {
+	return lookupInt64(name, c.flagSet)
+}
+
+// GlobalInt64 looks up the value of a global Int64Flag, returns
+// 0 if not found
+func (c *Context) GlobalInt64(name string) int64 {
+	if fs := lookupGlobalFlagSet(name, c); fs != nil {
+		return lookupInt64(name, fs)
+	}
+	return 0
+}
+
+func lookupInt64(name string, set *flag.FlagSet) int64 {
+	f := set.Lookup(name)
+	if f != nil {
+		parsed, err := strconv.ParseInt(f.Value.String(), 0, 64)
+		if err != nil {
+			return 0
+		}
+		return parsed
+	}
+	return 0
+}
diff --git a/vendor/github.com/urfave/cli/flag_int64_slice.go b/vendor/github.com/urfave/cli/flag_int64_slice.go
new file mode 100644
index 0000000..80772e7
--- /dev/null
+++ b/vendor/github.com/urfave/cli/flag_int64_slice.go
@@ -0,0 +1,199 @@
+package cli
+
+import (
+	"flag"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// Int64Slice is an opaque type for []int to satisfy flag.Value and flag.Getter
+type Int64Slice []int64
+
+// Set parses the value into an integer and appends it to the list of values
+func (f *Int64Slice) Set(value string) error {
+	tmp, err := strconv.ParseInt(value, 10, 64)
+	if err != nil {
+		return err
+	}
+	*f = append(*f, tmp)
+	return nil
+}
+
+// String returns a readable representation of this value (for usage defaults)
+func (f *Int64Slice) String() string {
+	slice := make([]string, len(*f))
+	for i, v := range *f {
+		slice[i] = strconv.FormatInt(v, 10)
+	}
+
+	return strings.Join(slice, ",")
+}
+
+// Value returns the slice of ints set by this flag
+func (f *Int64Slice) Value() []int64 {
+	return *f
+}
+
+// Get returns the slice of ints set by this flag
+func (f *Int64Slice) Get() interface{} {
+	return *f
+}
+
+// Int64SliceFlag is a flag with type *Int64Slice
+type Int64SliceFlag struct {
+	Name     string
+	Usage    string
+	EnvVar   string
+	FilePath string
+	Required bool
+	Hidden   bool
+	Value    *Int64Slice
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f Int64SliceFlag) String() string {
+	return FlagStringer(f)
+}
+
+// GetName returns the name of the flag
+func (f Int64SliceFlag) GetName() string {
+	return f.Name
+}
+
+// IsRequired returns whether or not the flag is required
+func (f Int64SliceFlag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f Int64SliceFlag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f Int64SliceFlag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f Int64SliceFlag) GetValue() string {
+	if f.Value != nil {
+		return f.Value.String()
+	}
+	return ""
+}
+
+// Apply populates the flag given the flag set and environment
+// Ignores errors
+func (f Int64SliceFlag) Apply(set *flag.FlagSet) {
+	_ = f.ApplyWithError(set)
+}
+
+// ApplyWithError populates the flag given the flag set and environment
+func (f Int64SliceFlag) ApplyWithError(set *flag.FlagSet) error {
+	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
+		newVal := &Int64Slice{}
+		for _, s := range strings.Split(envVal, ",") {
+			s = strings.TrimSpace(s)
+			if err := newVal.Set(s); err != nil {
+				return fmt.Errorf("could not parse %s as int64 slice value for flag %s: %s", envVal, f.Name, err)
+			}
+		}
+		if f.Value == nil {
+			f.Value = newVal
+		} else {
+			*f.Value = *newVal
+		}
+	}
+
+	eachName(f.Name, func(name string) {
+		if f.Value == nil {
+			f.Value = &Int64Slice{}
+		}
+		set.Var(f.Value, name, f.Usage)
+	})
+
+	return nil
+}
+
+// Int64Slice looks up the value of a local Int64SliceFlag, returns
+// nil if not found
+func (c *Context) Int64Slice(name string) []int64 {
+	return lookupInt64Slice(name, c.flagSet)
+}
+
+// GlobalInt64Slice looks up the value of a global Int64SliceFlag, returns
+// nil if not found
+func (c *Context) GlobalInt64Slice(name string) []int64 {
+	if fs := lookupGlobalFlagSet(name, c); fs != nil {
+		return lookupInt64Slice(name, fs)
+	}
+	return nil
+}
+
+func lookupInt64Slice(name string, set *flag.FlagSet) []int64 {
+	f := set.Lookup(name)
+	if f != nil {
+		value, ok := f.Value.(*Int64Slice)
+		if !ok {
+			return nil
+		}
+
+		// extract the slice from asserted value
+		parsed := value.Value()
+
+		// extract default value from the flag
+		var defaultVal []int64
+		for _, v := range strings.Split(f.DefValue, ",") {
+			if v != "" {
+				int64Value, err := strconv.ParseInt(v, 10, 64)
+				if err != nil {
+					panic(err)
+				}
+				defaultVal = append(defaultVal, int64Value)
+			}
+		}
+		// if the current value is not equal to the default value
+		// remove the default values from the flag
+		if !isInt64SliceEqual(parsed, defaultVal) {
+			for _, v := range defaultVal {
+				parsed = removeFromInt64Slice(parsed, v)
+			}
+		}
+		return parsed
+	}
+	return nil
+}
+
+func removeFromInt64Slice(slice []int64, val int64) []int64 {
+	for i, v := range slice {
+		if v == val {
+			ret := append([]int64{}, slice[:i]...)
+			ret = append(ret, slice[i+1:]...)
+			return ret
+		}
+	}
+	return slice
+}
+
+func isInt64SliceEqual(newValue, defaultValue []int64) bool {
+	// If one is nil, the other must also be nil.
+	if (newValue == nil) != (defaultValue == nil) {
+		return false
+	}
+
+	if len(newValue) != len(defaultValue) {
+		return false
+	}
+
+	for i, v := range newValue {
+		if v != defaultValue[i] {
+			return false
+		}
+	}
+
+	return true
+}
diff --git a/vendor/github.com/urfave/cli/flag_int_slice.go b/vendor/github.com/urfave/cli/flag_int_slice.go
new file mode 100644
index 0000000..af6d582
--- /dev/null
+++ b/vendor/github.com/urfave/cli/flag_int_slice.go
@@ -0,0 +1,198 @@
+package cli
+
+import (
+	"flag"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// IntSlice is an opaque type for []int to satisfy flag.Value and flag.Getter
+type IntSlice []int
+
+// Set parses the value into an integer and appends it to the list of values
+func (f *IntSlice) Set(value string) error {
+	tmp, err := strconv.Atoi(value)
+	if err != nil {
+		return err
+	}
+	*f = append(*f, tmp)
+	return nil
+}
+
+// String returns a readable representation of this value (for usage defaults)
+func (f *IntSlice) String() string {
+	slice := make([]string, len(*f))
+	for i, v := range *f {
+		slice[i] = strconv.Itoa(v)
+	}
+
+	return strings.Join(slice, ",")
+}
+
+// Value returns the slice of ints set by this flag
+func (f *IntSlice) Value() []int {
+	return *f
+}
+
+// Get returns the slice of ints set by this flag
+func (f *IntSlice) Get() interface{} {
+	return *f
+}
+
+// IntSliceFlag is a flag with type *IntSlice
+type IntSliceFlag struct {
+	Name     string
+	Usage    string
+	EnvVar   string
+	FilePath string
+	Required bool
+	Hidden   bool
+	Value    *IntSlice
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f IntSliceFlag) String() string {
+	return FlagStringer(f)
+}
+
+// GetName returns the name of the flag
+func (f IntSliceFlag) GetName() string {
+	return f.Name
+}
+
+// IsRequired returns whether or not the flag is required
+func (f IntSliceFlag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f IntSliceFlag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f IntSliceFlag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f IntSliceFlag) GetValue() string {
+	if f.Value != nil {
+		return f.Value.String()
+	}
+	return ""
+}
+
+// Apply populates the flag given the flag set and environment
+// Ignores errors
+func (f IntSliceFlag) Apply(set *flag.FlagSet) {
+	_ = f.ApplyWithError(set)
+}
+
+// ApplyWithError populates the flag given the flag set and environment
+func (f IntSliceFlag) ApplyWithError(set *flag.FlagSet) error {
+	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
+		newVal := &IntSlice{}
+		for _, s := range strings.Split(envVal, ",") {
+			s = strings.TrimSpace(s)
+			if err := newVal.Set(s); err != nil {
+				return fmt.Errorf("could not parse %s as int slice value for flag %s: %s", envVal, f.Name, err)
+			}
+		}
+		if f.Value == nil {
+			f.Value = newVal
+		} else {
+			*f.Value = *newVal
+		}
+	}
+
+	eachName(f.Name, func(name string) {
+		if f.Value == nil {
+			f.Value = &IntSlice{}
+		}
+		set.Var(f.Value, name, f.Usage)
+	})
+
+	return nil
+}
+
+// IntSlice looks up the value of a local IntSliceFlag, returns
+// nil if not found
+func (c *Context) IntSlice(name string) []int {
+	return lookupIntSlice(name, c.flagSet)
+}
+
+// GlobalIntSlice looks up the value of a global IntSliceFlag, returns
+// nil if not found
+func (c *Context) GlobalIntSlice(name string) []int {
+	if fs := lookupGlobalFlagSet(name, c); fs != nil {
+		return lookupIntSlice(name, fs)
+	}
+	return nil
+}
+
+func lookupIntSlice(name string, set *flag.FlagSet) []int {
+	f := set.Lookup(name)
+	if f != nil {
+		value, ok := f.Value.(*IntSlice)
+		if !ok {
+			return nil
+		}
+		// extract the slice from asserted value
+		slice := value.Value()
+
+		// extract default value from the flag
+		var defaultVal []int
+		for _, v := range strings.Split(f.DefValue, ",") {
+			if v != "" {
+				intValue, err := strconv.Atoi(v)
+				if err != nil {
+					panic(err)
+				}
+				defaultVal = append(defaultVal, intValue)
+			}
+		}
+		// if the current value is not equal to the default value
+		// remove the default values from the flag
+		if !isIntSliceEqual(slice, defaultVal) {
+			for _, v := range defaultVal {
+				slice = removeFromIntSlice(slice, v)
+			}
+		}
+		return slice
+	}
+	return nil
+}
+
+func removeFromIntSlice(slice []int, val int) []int {
+	for i, v := range slice {
+		if v == val {
+			ret := append([]int{}, slice[:i]...)
+			ret = append(ret, slice[i+1:]...)
+			return ret
+		}
+	}
+	return slice
+}
+
+func isIntSliceEqual(newValue, defaultValue []int) bool {
+	// If one is nil, the other must also be nil.
+	if (newValue == nil) != (defaultValue == nil) {
+		return false
+	}
+
+	if len(newValue) != len(defaultValue) {
+		return false
+	}
+
+	for i, v := range newValue {
+		if v != defaultValue[i] {
+			return false
+		}
+	}
+
+	return true
+}
diff --git a/vendor/github.com/urfave/cli/flag_string.go b/vendor/github.com/urfave/cli/flag_string.go
new file mode 100644
index 0000000..9f29da4
--- /dev/null
+++ b/vendor/github.com/urfave/cli/flag_string.go
@@ -0,0 +1,98 @@
+package cli
+
+import "flag"
+
+// StringFlag is a flag with type string
+type StringFlag struct {
+	Name        string
+	Usage       string
+	EnvVar      string
+	FilePath    string
+	Required    bool
+	Hidden      bool
+	TakesFile   bool
+	Value       string
+	Destination *string
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f StringFlag) String() string {
+	return FlagStringer(f)
+}
+
+// GetName returns the name of the flag
+func (f StringFlag) GetName() string {
+	return f.Name
+}
+
+// IsRequired returns whether or not the flag is required
+func (f StringFlag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f StringFlag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f StringFlag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f StringFlag) GetValue() string {
+	return f.Value
+}
+
+// Apply populates the flag given the flag set and environment
+// Ignores errors
+func (f StringFlag) Apply(set *flag.FlagSet) {
+	_ = f.ApplyWithError(set)
+}
+
+// ApplyWithError populates the flag given the flag set and environment
+func (f StringFlag) ApplyWithError(set *flag.FlagSet) error {
+	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
+		f.Value = envVal
+	}
+
+	eachName(f.Name, func(name string) {
+		if f.Destination != nil {
+			set.StringVar(f.Destination, name, f.Value, f.Usage)
+			return
+		}
+		set.String(name, f.Value, f.Usage)
+	})
+
+	return nil
+}
+
+// String looks up the value of a local StringFlag, returns
+// "" if not found
+func (c *Context) String(name string) string {
+	return lookupString(name, c.flagSet)
+}
+
+// GlobalString looks up the value of a global StringFlag, returns
+// "" if not found
+func (c *Context) GlobalString(name string) string {
+	if fs := lookupGlobalFlagSet(name, c); fs != nil {
+		return lookupString(name, fs)
+	}
+	return ""
+}
+
+func lookupString(name string, set *flag.FlagSet) string {
+	f := set.Lookup(name)
+	if f != nil {
+		parsed, err := f.Value.String(), error(nil)
+		if err != nil {
+			return ""
+		}
+		return parsed
+	}
+	return ""
+}
diff --git a/vendor/github.com/urfave/cli/flag_string_slice.go b/vendor/github.com/urfave/cli/flag_string_slice.go
new file mode 100644
index 0000000..a7c71e9
--- /dev/null
+++ b/vendor/github.com/urfave/cli/flag_string_slice.go
@@ -0,0 +1,184 @@
+package cli
+
+import (
+	"flag"
+	"fmt"
+	"strings"
+)
+
+// StringSlice is an opaque type for []string to satisfy flag.Value and flag.Getter
+type StringSlice []string
+
+// Set appends the string value to the list of values
+func (f *StringSlice) Set(value string) error {
+	*f = append(*f, value)
+	return nil
+}
+
+// String returns a readable representation of this value (for usage defaults)
+func (f *StringSlice) String() string {
+	return strings.Join(*f, ",")
+}
+
+// Value returns the slice of strings set by this flag
+func (f *StringSlice) Value() []string {
+	return *f
+}
+
+// Get returns the slice of strings set by this flag
+func (f *StringSlice) Get() interface{} {
+	return *f
+}
+
+// StringSliceFlag is a flag with type *StringSlice
+type StringSliceFlag struct {
+	Name      string
+	Usage     string
+	EnvVar    string
+	FilePath  string
+	Required  bool
+	Hidden    bool
+	TakesFile bool
+	Value     *StringSlice
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f StringSliceFlag) String() string {
+	return FlagStringer(f)
+}
+
+// GetName returns the name of the flag
+func (f StringSliceFlag) GetName() string {
+	return f.Name
+}
+
+// IsRequired returns whether or not the flag is required
+func (f StringSliceFlag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f StringSliceFlag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f StringSliceFlag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f StringSliceFlag) GetValue() string {
+	if f.Value != nil {
+		return f.Value.String()
+	}
+	return ""
+}
+
+// Apply populates the flag given the flag set and environment
+// Ignores errors
+func (f StringSliceFlag) Apply(set *flag.FlagSet) {
+	_ = f.ApplyWithError(set)
+}
+
+// ApplyWithError populates the flag given the flag set and environment
+func (f StringSliceFlag) ApplyWithError(set *flag.FlagSet) error {
+	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
+		newVal := &StringSlice{}
+		for _, s := range strings.Split(envVal, ",") {
+			s = strings.TrimSpace(s)
+			if err := newVal.Set(s); err != nil {
+				return fmt.Errorf("could not parse %s as string value for flag %s: %s", envVal, f.Name, err)
+			}
+		}
+		if f.Value == nil {
+			f.Value = newVal
+		} else {
+			*f.Value = *newVal
+		}
+	}
+
+	eachName(f.Name, func(name string) {
+		if f.Value == nil {
+			f.Value = &StringSlice{}
+		}
+		set.Var(f.Value, name, f.Usage)
+	})
+
+	return nil
+}
+
+// StringSlice looks up the value of a local StringSliceFlag, returns
+// nil if not found
+func (c *Context) StringSlice(name string) []string {
+	return lookupStringSlice(name, c.flagSet)
+}
+
+// GlobalStringSlice looks up the value of a global StringSliceFlag, returns
+// nil if not found
+func (c *Context) GlobalStringSlice(name string) []string {
+	if fs := lookupGlobalFlagSet(name, c); fs != nil {
+		return lookupStringSlice(name, fs)
+	}
+	return nil
+}
+
+func lookupStringSlice(name string, set *flag.FlagSet) []string {
+	f := set.Lookup(name)
+	if f != nil {
+		value, ok := f.Value.(*StringSlice)
+		if !ok {
+			return nil
+		}
+		// extract the slice from asserted value
+		slice := value.Value()
+
+		// extract default value from the flag
+		var defaultVal []string
+		for _, v := range strings.Split(f.DefValue, ",") {
+			defaultVal = append(defaultVal, v)
+		}
+
+		// if the current value is not equal to the default value
+		// remove the default values from the flag
+		if !isStringSliceEqual(slice, defaultVal) {
+			for _, v := range defaultVal {
+				slice = removeFromStringSlice(slice, v)
+			}
+		}
+		return slice
+	}
+	return nil
+}
+
+func removeFromStringSlice(slice []string, val string) []string {
+	for i, v := range slice {
+		if v == val {
+			ret := append([]string{}, slice[:i]...)
+			ret = append(ret, slice[i+1:]...)
+			return ret
+		}
+	}
+	return slice
+}
+
+func isStringSliceEqual(newValue, defaultValue []string) bool {
+	// If one is nil, the other must also be nil.
+	if (newValue == nil) != (defaultValue == nil) {
+		return false
+	}
+
+	if len(newValue) != len(defaultValue) {
+		return false
+	}
+
+	for i, v := range newValue {
+		if v != defaultValue[i] {
+			return false
+		}
+	}
+
+	return true
+}
diff --git a/vendor/github.com/urfave/cli/flag_uint.go b/vendor/github.com/urfave/cli/flag_uint.go
new file mode 100644
index 0000000..d6a04f4
--- /dev/null
+++ b/vendor/github.com/urfave/cli/flag_uint.go
@@ -0,0 +1,106 @@
+package cli
+
+import (
+	"flag"
+	"fmt"
+	"strconv"
+)
+
+// UintFlag is a flag with type uint
+type UintFlag struct {
+	Name        string
+	Usage       string
+	EnvVar      string
+	FilePath    string
+	Required    bool
+	Hidden      bool
+	Value       uint
+	Destination *uint
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f UintFlag) String() string {
+	return FlagStringer(f)
+}
+
+// GetName returns the name of the flag
+func (f UintFlag) GetName() string {
+	return f.Name
+}
+
+// IsRequired returns whether or not the flag is required
+func (f UintFlag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f UintFlag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f UintFlag) GetUsage() string {
+	return f.Usage
+}
+
+// Apply populates the flag given the flag set and environment
+// Ignores errors
+func (f UintFlag) Apply(set *flag.FlagSet) {
+	_ = f.ApplyWithError(set)
+}
+
+// ApplyWithError populates the flag given the flag set and environment
+func (f UintFlag) ApplyWithError(set *flag.FlagSet) error {
+	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
+		envValInt, err := strconv.ParseUint(envVal, 0, 64)
+		if err != nil {
+			return fmt.Errorf("could not parse %s as uint value for flag %s: %s", envVal, f.Name, err)
+		}
+
+		f.Value = uint(envValInt)
+	}
+
+	eachName(f.Name, func(name string) {
+		if f.Destination != nil {
+			set.UintVar(f.Destination, name, f.Value, f.Usage)
+			return
+		}
+		set.Uint(name, f.Value, f.Usage)
+	})
+
+	return nil
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f UintFlag) GetValue() string {
+	return fmt.Sprintf("%d", f.Value)
+}
+
+// Uint looks up the value of a local UintFlag, returns
+// 0 if not found
+func (c *Context) Uint(name string) uint {
+	return lookupUint(name, c.flagSet)
+}
+
+// GlobalUint looks up the value of a global UintFlag, returns
+// 0 if not found
+func (c *Context) GlobalUint(name string) uint {
+	if fs := lookupGlobalFlagSet(name, c); fs != nil {
+		return lookupUint(name, fs)
+	}
+	return 0
+}
+
+func lookupUint(name string, set *flag.FlagSet) uint {
+	f := set.Lookup(name)
+	if f != nil {
+		parsed, err := strconv.ParseUint(f.Value.String(), 0, 64)
+		if err != nil {
+			return 0
+		}
+		return uint(parsed)
+	}
+	return 0
+}
diff --git a/vendor/github.com/urfave/cli/flag_uint64.go b/vendor/github.com/urfave/cli/flag_uint64.go
new file mode 100644
index 0000000..ea6493a
--- /dev/null
+++ b/vendor/github.com/urfave/cli/flag_uint64.go
@@ -0,0 +1,106 @@
+package cli
+
+import (
+	"flag"
+	"fmt"
+	"strconv"
+)
+
+// Uint64Flag is a flag with type uint64
+type Uint64Flag struct {
+	Name        string
+	Usage       string
+	EnvVar      string
+	FilePath    string
+	Required    bool
+	Hidden      bool
+	Value       uint64
+	Destination *uint64
+}
+
+// String returns a readable representation of this value
+// (for usage defaults)
+func (f Uint64Flag) String() string {
+	return FlagStringer(f)
+}
+
+// GetName returns the name of the flag
+func (f Uint64Flag) GetName() string {
+	return f.Name
+}
+
+// IsRequired returns whether or not the flag is required
+func (f Uint64Flag) IsRequired() bool {
+	return f.Required
+}
+
+// TakesValue returns true of the flag takes a value, otherwise false
+func (f Uint64Flag) TakesValue() bool {
+	return true
+}
+
+// GetUsage returns the usage string for the flag
+func (f Uint64Flag) GetUsage() string {
+	return f.Usage
+}
+
+// GetValue returns the flags value as string representation and an empty
+// string if the flag takes no value at all.
+func (f Uint64Flag) GetValue() string {
+	return fmt.Sprintf("%d", f.Value)
+}
+
+// Apply populates the flag given the flag set and environment
+// Ignores errors
+func (f Uint64Flag) Apply(set *flag.FlagSet) {
+	_ = f.ApplyWithError(set)
+}
+
+// ApplyWithError populates the flag given the flag set and environment
+func (f Uint64Flag) ApplyWithError(set *flag.FlagSet) error {
+	if envVal, ok := flagFromFileEnv(f.FilePath, f.EnvVar); ok {
+		envValInt, err := strconv.ParseUint(envVal, 0, 64)
+		if err != nil {
+			return fmt.Errorf("could not parse %s as uint64 value for flag %s: %s", envVal, f.Name, err)
+		}
+
+		f.Value = envValInt
+	}
+
+	eachName(f.Name, func(name string) {
+		if f.Destination != nil {
+			set.Uint64Var(f.Destination, name, f.Value, f.Usage)
+			return
+		}
+		set.Uint64(name, f.Value, f.Usage)
+	})
+
+	return nil
+}
+
+// Uint64 looks up the value of a local Uint64Flag, returns
+// 0 if not found
+func (c *Context) Uint64(name string) uint64 {
+	return lookupUint64(name, c.flagSet)
+}
+
+// GlobalUint64 looks up the value of a global Uint64Flag, returns
+// 0 if not found
+func (c *Context) GlobalUint64(name string) uint64 {
+	if fs := lookupGlobalFlagSet(name, c); fs != nil {
+		return lookupUint64(name, fs)
+	}
+	return 0
+}
+
+func lookupUint64(name string, set *flag.FlagSet) uint64 {
+	f := set.Lookup(name)
+	if f != nil {
+		parsed, err := strconv.ParseUint(f.Value.String(), 0, 64)
+		if err != nil {
+			return 0
+		}
+		return parsed
+	}
+	return 0
+}
diff --git a/vendor/github.com/codegangsta/cli/funcs.go b/vendor/github.com/urfave/cli/funcs.go
similarity index 64%
rename from vendor/github.com/codegangsta/cli/funcs.go
rename to vendor/github.com/urfave/cli/funcs.go
index cba5e6c..0036b11 100644
--- a/vendor/github.com/codegangsta/cli/funcs.go
+++ b/vendor/github.com/urfave/cli/funcs.go
@@ -23,6 +23,22 @@ type CommandNotFoundFunc func(*Context, string)
 // is displayed and the execution is interrupted.
 type OnUsageErrorFunc func(context *Context, err error, isSubcommand bool) error
 
+// ExitErrHandlerFunc is executed if provided in order to handle ExitError values
+// returned by Actions and Before/After functions.
+type ExitErrHandlerFunc func(context *Context, err error)
+
 // FlagStringFunc is used by the help generation to display a flag, which is
 // expected to be a single line.
 type FlagStringFunc func(Flag) string
+
+// FlagNamePrefixFunc is used by the default FlagStringFunc to create prefix
+// text for a flag's full name.
+type FlagNamePrefixFunc func(fullName, placeholder string) string
+
+// FlagEnvHintFunc is used by the default FlagStringFunc to annotate flag help
+// with the environment variable details.
+type FlagEnvHintFunc func(envVar, str string) string
+
+// FlagFileHintFunc is used by the default FlagStringFunc to annotate flag help
+// with the file path details.
+type FlagFileHintFunc func(filePath, str string) string
diff --git a/vendor/github.com/urfave/cli/go.mod b/vendor/github.com/urfave/cli/go.mod
new file mode 100644
index 0000000..a3a0032
--- /dev/null
+++ b/vendor/github.com/urfave/cli/go.mod
@@ -0,0 +1,10 @@
+module github.com/urfave/cli
+
+go 1.11
+
+require (
+	github.com/BurntSushi/toml v1.3.2
+	github.com/cpuguy83/go-md2man/v2 v2.0.4
+	github.com/stretchr/testify v1.9.0
+	gopkg.in/yaml.v2 v2.4.0
+)
diff --git a/vendor/github.com/urfave/cli/go.sum b/vendor/github.com/urfave/cli/go.sum
new file mode 100644
index 0000000..c8ab634
--- /dev/null
+++ b/vendor/github.com/urfave/cli/go.sum
@@ -0,0 +1,27 @@
+github.com/BurntSushi/toml v1.3.2 h1:o7IhLm0Msx3BaB+n3Ag7L8EVlByGnpq14C4YWiu/gL8=
+github.com/BurntSushi/toml v1.3.2/go.mod h1:CxXYINrC8qIiEnFrOxCa7Jy5BFHlXnUU2pbicEuybxQ=
+github.com/cpuguy83/go-md2man/v2 v2.0.4 h1:wfIWP927BUkWJb2NmU/kNDYIBTh/ziUX91+lVfRxZq4=
+github.com/cpuguy83/go-md2man/v2 v2.0.4/go.mod h1:tgQtvFlXSQOSOSIRvRPT7W67SCa46tRHOmNcaadrF8o=
+github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/russross/blackfriday/v2 v2.1.0 h1:JIOH55/0cWyOuilr9/qlrm0BSXldqnqwMsf35Ld67mk=
+github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
+github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
+github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/stretchr/testify v1.9.0 h1:HtqpIVDClZ4nwg75+f6Lvsy/wHu+3BoSGCbBAcpTsTg=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
+gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
diff --git a/vendor/github.com/urfave/cli/help.go b/vendor/github.com/urfave/cli/help.go
new file mode 100644
index 0000000..2280e33
--- /dev/null
+++ b/vendor/github.com/urfave/cli/help.go
@@ -0,0 +1,363 @@
+package cli
+
+import (
+	"fmt"
+	"io"
+	"os"
+	"strings"
+	"text/tabwriter"
+	"text/template"
+	"unicode/utf8"
+)
+
+var helpCommand = Command{
+	Name:      "help",
+	Aliases:   []string{"h"},
+	Usage:     "Shows a list of commands or help for one command",
+	ArgsUsage: "[command]",
+	Action: func(c *Context) error {
+		args := c.Args()
+		if args.Present() {
+			return ShowCommandHelp(c, args.First())
+		}
+
+		_ = ShowAppHelp(c)
+		return nil
+	},
+}
+
+var helpSubcommand = Command{
+	Name:      "help",
+	Aliases:   []string{"h"},
+	Usage:     "Shows a list of commands or help for one command",
+	ArgsUsage: "[command]",
+	Action: func(c *Context) error {
+		args := c.Args()
+		if args.Present() {
+			return ShowCommandHelp(c, args.First())
+		}
+
+		return ShowSubcommandHelp(c)
+	},
+}
+
+// Prints help for the App or Command
+type helpPrinter func(w io.Writer, templ string, data interface{})
+
+// Prints help for the App or Command with custom template function.
+type helpPrinterCustom func(w io.Writer, templ string, data interface{}, customFunc map[string]interface{})
+
+// HelpPrinter is a function that writes the help output. If not set explicitly,
+// this calls HelpPrinterCustom using only the default template functions.
+//
+// If custom logic for printing help is required, this function can be
+// overridden. If the ExtraInfo field is defined on an App, this function
+// should not be modified, as HelpPrinterCustom will be used directly in order
+// to capture the extra information.
+var HelpPrinter helpPrinter = printHelp
+
+// HelpPrinterCustom is a function that writes the help output. It is used as
+// the default implementation of HelpPrinter, and may be called directly if
+// the ExtraInfo field is set on an App.
+var HelpPrinterCustom helpPrinterCustom = printHelpCustom
+
+// VersionPrinter prints the version for the App
+var VersionPrinter = printVersion
+
+// ShowAppHelpAndExit - Prints the list of subcommands for the app and exits with exit code.
+func ShowAppHelpAndExit(c *Context, exitCode int) {
+	_ = ShowAppHelp(c)
+	os.Exit(exitCode)
+}
+
+// ShowAppHelp is an action that displays the help.
+func ShowAppHelp(c *Context) error {
+	template := c.App.CustomAppHelpTemplate
+	if template == "" {
+		template = AppHelpTemplate
+	}
+
+	if c.App.ExtraInfo == nil {
+		HelpPrinter(c.App.Writer, template, c.App)
+		return nil
+	}
+
+	customAppData := func() map[string]interface{} {
+		return map[string]interface{}{
+			"ExtraInfo": c.App.ExtraInfo,
+		}
+	}
+	HelpPrinterCustom(c.App.Writer, template, c.App, customAppData())
+
+	return nil
+}
+
+// DefaultAppComplete prints the list of subcommands as the default app completion method
+func DefaultAppComplete(c *Context) {
+	DefaultCompleteWithFlags(nil)(c)
+}
+
+func printCommandSuggestions(commands []Command, writer io.Writer) {
+	for _, command := range commands {
+		if command.Hidden {
+			continue
+		}
+		if os.Getenv("_CLI_ZSH_AUTOCOMPLETE_HACK") == "1" {
+			for _, name := range command.Names() {
+				_, _ = fmt.Fprintf(writer, "%s:%s\n", name, command.Usage)
+			}
+		} else {
+			for _, name := range command.Names() {
+				_, _ = fmt.Fprintf(writer, "%s\n", name)
+			}
+		}
+	}
+}
+
+func cliArgContains(flagName string) bool {
+	for _, name := range strings.Split(flagName, ",") {
+		name = strings.TrimSpace(name)
+		count := utf8.RuneCountInString(name)
+		if count > 2 {
+			count = 2
+		}
+		flag := fmt.Sprintf("%s%s", strings.Repeat("-", count), name)
+		for _, a := range os.Args {
+			if a == flag {
+				return true
+			}
+		}
+	}
+	return false
+}
+
+func printFlagSuggestions(lastArg string, flags []Flag, writer io.Writer) {
+	cur := strings.TrimPrefix(lastArg, "-")
+	cur = strings.TrimPrefix(cur, "-")
+	for _, flag := range flags {
+		if bflag, ok := flag.(BoolFlag); ok && bflag.Hidden {
+			continue
+		}
+		for _, name := range strings.Split(flag.GetName(), ",") {
+			name = strings.TrimSpace(name)
+			// this will get total count utf8 letters in flag name
+			count := utf8.RuneCountInString(name)
+			if count > 2 {
+				count = 2 // resuse this count to generate single - or -- in flag completion
+			}
+			// if flag name has more than one utf8 letter and last argument in cli has -- prefix then
+			// skip flag completion for short flags example -v or -x
+			if strings.HasPrefix(lastArg, "--") && count == 1 {
+				continue
+			}
+			// match if last argument matches this flag and it is not repeated
+			if strings.HasPrefix(name, cur) && cur != name && !cliArgContains(flag.GetName()) {
+				flagCompletion := fmt.Sprintf("%s%s", strings.Repeat("-", count), name)
+				_, _ = fmt.Fprintln(writer, flagCompletion)
+			}
+		}
+	}
+}
+
+func DefaultCompleteWithFlags(cmd *Command) func(c *Context) {
+	return func(c *Context) {
+		if len(os.Args) > 2 {
+			lastArg := os.Args[len(os.Args)-2]
+			if strings.HasPrefix(lastArg, "-") {
+				printFlagSuggestions(lastArg, c.App.Flags, c.App.Writer)
+				if cmd != nil {
+					printFlagSuggestions(lastArg, cmd.Flags, c.App.Writer)
+				}
+				return
+			}
+		}
+		if cmd != nil {
+			printCommandSuggestions(cmd.Subcommands, c.App.Writer)
+		} else {
+			printCommandSuggestions(c.App.Commands, c.App.Writer)
+		}
+	}
+}
+
+// ShowCommandHelpAndExit - exits with code after showing help
+func ShowCommandHelpAndExit(c *Context, command string, code int) {
+	_ = ShowCommandHelp(c, command)
+	os.Exit(code)
+}
+
+// ShowCommandHelp prints help for the given command
+func ShowCommandHelp(ctx *Context, command string) error {
+	// show the subcommand help for a command with subcommands
+	if command == "" {
+		HelpPrinter(ctx.App.Writer, SubcommandHelpTemplate, ctx.App)
+		return nil
+	}
+
+	for _, c := range ctx.App.Commands {
+		if c.HasName(command) {
+			templ := c.CustomHelpTemplate
+			if templ == "" {
+				templ = CommandHelpTemplate
+			}
+
+			HelpPrinter(ctx.App.Writer, templ, c)
+
+			return nil
+		}
+	}
+
+	if ctx.App.CommandNotFound == nil {
+		return NewExitError(fmt.Sprintf("No help topic for '%v'", command), 3)
+	}
+
+	ctx.App.CommandNotFound(ctx, command)
+	return nil
+}
+
+// ShowSubcommandHelp prints help for the given subcommand
+func ShowSubcommandHelp(c *Context) error {
+	return ShowCommandHelp(c, c.Command.Name)
+}
+
+// ShowVersion prints the version number of the App
+func ShowVersion(c *Context) {
+	VersionPrinter(c)
+}
+
+func printVersion(c *Context) {
+	_, _ = fmt.Fprintf(c.App.Writer, "%v version %v\n", c.App.Name, c.App.Version)
+}
+
+// ShowCompletions prints the lists of commands within a given context
+func ShowCompletions(c *Context) {
+	a := c.App
+	if a != nil && a.BashComplete != nil {
+		a.BashComplete(c)
+	}
+}
+
+// ShowCommandCompletions prints the custom completions for a given command
+func ShowCommandCompletions(ctx *Context, command string) {
+	c := ctx.App.Command(command)
+	if c != nil {
+		if c.BashComplete != nil {
+			c.BashComplete(ctx)
+		} else {
+			DefaultCompleteWithFlags(c)(ctx)
+		}
+	}
+
+}
+
+// printHelpCustom is the default implementation of HelpPrinterCustom.
+//
+// The customFuncs map will be combined with a default template.FuncMap to
+// allow using arbitrary functions in template rendering.
+func printHelpCustom(out io.Writer, templ string, data interface{}, customFuncs map[string]interface{}) {
+	funcMap := template.FuncMap{
+		"join": strings.Join,
+	}
+	for key, value := range customFuncs {
+		funcMap[key] = value
+	}
+
+	w := tabwriter.NewWriter(out, 1, 8, 2, ' ', 0)
+	t := template.Must(template.New("help").Funcs(funcMap).Parse(templ))
+	err := t.Execute(w, data)
+	if err != nil {
+		// If the writer is closed, t.Execute will fail, and there's nothing
+		// we can do to recover.
+		if os.Getenv("CLI_TEMPLATE_ERROR_DEBUG") != "" {
+			_, _ = fmt.Fprintf(ErrWriter, "CLI TEMPLATE ERROR: %#v\n", err)
+		}
+		return
+	}
+	_ = w.Flush()
+}
+
+func printHelp(out io.Writer, templ string, data interface{}) {
+	HelpPrinterCustom(out, templ, data, nil)
+}
+
+func checkVersion(c *Context) bool {
+	found := false
+	if VersionFlag.GetName() != "" {
+		eachName(VersionFlag.GetName(), func(name string) {
+			if c.GlobalBool(name) || c.Bool(name) {
+				found = true
+			}
+		})
+	}
+	return found
+}
+
+func checkHelp(c *Context) bool {
+	found := false
+	if HelpFlag.GetName() != "" {
+		eachName(HelpFlag.GetName(), func(name string) {
+			if c.GlobalBool(name) || c.Bool(name) {
+				found = true
+			}
+		})
+	}
+	return found
+}
+
+func checkCommandHelp(c *Context, name string) bool {
+	if c.Bool("h") || c.Bool("help") {
+		_ = ShowCommandHelp(c, name)
+		return true
+	}
+
+	return false
+}
+
+func checkSubcommandHelp(c *Context) bool {
+	if c.Bool("h") || c.Bool("help") {
+		_ = ShowSubcommandHelp(c)
+		return true
+	}
+
+	return false
+}
+
+func checkShellCompleteFlag(a *App, arguments []string) (bool, []string) {
+	if !a.EnableBashCompletion {
+		return false, arguments
+	}
+
+	pos := len(arguments) - 1
+	lastArg := arguments[pos]
+
+	if lastArg != "--"+BashCompletionFlag.GetName() {
+		return false, arguments
+	}
+
+	return true, arguments[:pos]
+}
+
+func checkCompletions(c *Context) bool {
+	if !c.shellComplete {
+		return false
+	}
+
+	if args := c.Args(); args.Present() {
+		name := args.First()
+		if cmd := c.App.Command(name); cmd != nil {
+			// let the command handle the completion
+			return false
+		}
+	}
+
+	ShowCompletions(c)
+	return true
+}
+
+func checkCommandCompletions(c *Context, name string) bool {
+	if !c.shellComplete {
+		return false
+	}
+
+	ShowCommandCompletions(c, name)
+	return true
+}
diff --git a/vendor/github.com/urfave/cli/parse.go b/vendor/github.com/urfave/cli/parse.go
new file mode 100644
index 0000000..7df1729
--- /dev/null
+++ b/vendor/github.com/urfave/cli/parse.go
@@ -0,0 +1,94 @@
+package cli
+
+import (
+	"flag"
+	"strings"
+)
+
+type iterativeParser interface {
+	newFlagSet() (*flag.FlagSet, error)
+	useShortOptionHandling() bool
+}
+
+// To enable short-option handling (e.g., "-it" vs "-i -t") we have to
+// iteratively catch parsing errors. This way we achieve LR parsing without
+// transforming any arguments. Otherwise, there is no way we can discriminate
+// combined short options from common arguments that should be left untouched.
+// Pass `shellComplete` to continue parsing options on failure during shell
+// completion when, the user-supplied options may be incomplete.
+func parseIter(set *flag.FlagSet, ip iterativeParser, args []string, shellComplete bool) error {
+	for {
+		err := set.Parse(args)
+		if !ip.useShortOptionHandling() || err == nil {
+			if shellComplete {
+				return nil
+			}
+			return err
+		}
+
+		errStr := err.Error()
+		trimmed := strings.TrimPrefix(errStr, "flag provided but not defined: -")
+		if errStr == trimmed {
+			return err
+		}
+
+		// regenerate the initial args with the split short opts
+		argsWereSplit := false
+		for i, arg := range args {
+			// skip args that are not part of the error message
+			if name := strings.TrimLeft(arg, "-"); name != trimmed {
+				continue
+			}
+
+			// if we can't split, the error was accurate
+			shortOpts := splitShortOptions(set, arg)
+			if len(shortOpts) == 1 {
+				return err
+			}
+
+			// swap current argument with the split version
+			args = append(args[:i], append(shortOpts, args[i+1:]...)...)
+			argsWereSplit = true
+			break
+		}
+
+		// This should be an impossible to reach code path, but in case the arg
+		// splitting failed to happen, this will prevent infinite loops
+		if !argsWereSplit {
+			return err
+		}
+
+		// Since custom parsing failed, replace the flag set before retrying
+		newSet, err := ip.newFlagSet()
+		if err != nil {
+			return err
+		}
+		*set = *newSet
+	}
+}
+
+func splitShortOptions(set *flag.FlagSet, arg string) []string {
+	shortFlagsExist := func(s string) bool {
+		for _, c := range s[1:] {
+			if f := set.Lookup(string(c)); f == nil {
+				return false
+			}
+		}
+		return true
+	}
+
+	if !isSplittable(arg) || !shortFlagsExist(arg) {
+		return []string{arg}
+	}
+
+	separated := make([]string, 0, len(arg)-1)
+	for _, flagChar := range arg[1:] {
+		separated = append(separated, "-"+string(flagChar))
+	}
+
+	return separated
+}
+
+func isSplittable(flagArg string) bool {
+	return strings.HasPrefix(flagArg, "-") && !strings.HasPrefix(flagArg, "--") && len(flagArg) > 2
+}
diff --git a/vendor/github.com/urfave/cli/sort.go b/vendor/github.com/urfave/cli/sort.go
new file mode 100644
index 0000000..23d1c2f
--- /dev/null
+++ b/vendor/github.com/urfave/cli/sort.go
@@ -0,0 +1,29 @@
+package cli
+
+import "unicode"
+
+// lexicographicLess compares strings alphabetically considering case.
+func lexicographicLess(i, j string) bool {
+	iRunes := []rune(i)
+	jRunes := []rune(j)
+
+	lenShared := len(iRunes)
+	if lenShared > len(jRunes) {
+		lenShared = len(jRunes)
+	}
+
+	for index := 0; index < lenShared; index++ {
+		ir := iRunes[index]
+		jr := jRunes[index]
+
+		if lir, ljr := unicode.ToLower(ir), unicode.ToLower(jr); lir != ljr {
+			return lir < ljr
+		}
+
+		if ir != jr {
+			return ir < jr
+		}
+	}
+
+	return i < j
+}
diff --git a/vendor/github.com/urfave/cli/template.go b/vendor/github.com/urfave/cli/template.go
new file mode 100644
index 0000000..c631fb9
--- /dev/null
+++ b/vendor/github.com/urfave/cli/template.go
@@ -0,0 +1,121 @@
+package cli
+
+// AppHelpTemplate is the text template for the Default help topic.
+// cli.go uses text/template to render templates. You can
+// render custom help text by setting this variable.
+var AppHelpTemplate = `NAME:
+   {{.Name}}{{if .Usage}} - {{.Usage}}{{end}}
+
+USAGE:
+   {{if .UsageText}}{{.UsageText}}{{else}}{{.HelpName}} {{if .VisibleFlags}}[global options]{{end}}{{if .Commands}} command [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}}{{if .Version}}{{if not .HideVersion}}
+
+VERSION:
+   {{.Version}}{{end}}{{end}}{{if .Description}}
+
+DESCRIPTION:
+   {{.Description}}{{end}}{{if len .Authors}}
+
+AUTHOR{{with $length := len .Authors}}{{if ne 1 $length}}S{{end}}{{end}}:
+   {{range $index, $author := .Authors}}{{if $index}}
+   {{end}}{{$author}}{{end}}{{end}}{{if .VisibleCommands}}
+
+COMMANDS:{{range .VisibleCategories}}{{if .Name}}
+
+   {{.Name}}:{{range .VisibleCommands}}
+     {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{else}}{{range .VisibleCommands}}
+   {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{end}}{{end}}{{end}}{{if .VisibleFlags}}
+
+GLOBAL OPTIONS:
+   {{range $index, $option := .VisibleFlags}}{{if $index}}
+   {{end}}{{$option}}{{end}}{{end}}{{if .Copyright}}
+
+COPYRIGHT:
+   {{.Copyright}}{{end}}
+`
+
+// CommandHelpTemplate is the text template for the command help topic.
+// cli.go uses text/template to render templates. You can
+// render custom help text by setting this variable.
+var CommandHelpTemplate = `NAME:
+   {{.HelpName}} - {{.Usage}}
+
+USAGE:
+   {{if .UsageText}}{{.UsageText}}{{else}}{{.HelpName}}{{if .VisibleFlags}} [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}}{{if .Category}}
+
+CATEGORY:
+   {{.Category}}{{end}}{{if .Description}}
+
+DESCRIPTION:
+   {{.Description}}{{end}}{{if .VisibleFlags}}
+
+OPTIONS:
+   {{range .VisibleFlags}}{{.}}
+   {{end}}{{end}}
+`
+
+// SubcommandHelpTemplate is the text template for the subcommand help topic.
+// cli.go uses text/template to render templates. You can
+// render custom help text by setting this variable.
+var SubcommandHelpTemplate = `NAME:
+   {{.HelpName}} - {{if .Description}}{{.Description}}{{else}}{{.Usage}}{{end}}
+
+USAGE:
+   {{if .UsageText}}{{.UsageText}}{{else}}{{.HelpName}} command{{if .VisibleFlags}} [command options]{{end}} {{if .ArgsUsage}}{{.ArgsUsage}}{{else}}[arguments...]{{end}}{{end}}
+
+COMMANDS:{{range .VisibleCategories}}{{if .Name}}
+
+   {{.Name}}:{{range .VisibleCommands}}
+     {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{else}}{{range .VisibleCommands}}
+   {{join .Names ", "}}{{"\t"}}{{.Usage}}{{end}}{{end}}{{end}}{{if .VisibleFlags}}
+
+OPTIONS:
+   {{range .VisibleFlags}}{{.}}
+   {{end}}{{end}}
+`
+
+var MarkdownDocTemplate = `% {{ .App.Name }}(8) {{ .App.Description }}
+
+% {{ .App.Author }}
+
+# NAME
+
+{{ .App.Name }}{{ if .App.Usage }} - {{ .App.Usage }}{{ end }}
+
+# SYNOPSIS
+
+{{ .App.Name }}
+{{ if .SynopsisArgs }}
+` + "```" + `
+{{ range $v := .SynopsisArgs }}{{ $v }}{{ end }}` + "```" + `
+{{ end }}{{ if .App.UsageText }}
+# DESCRIPTION
+
+{{ .App.UsageText }}
+{{ end }}
+**Usage**:
+
+` + "```" + `
+{{ .App.Name }} [GLOBAL OPTIONS] command [COMMAND OPTIONS] [ARGUMENTS...]
+` + "```" + `
+{{ if .GlobalArgs }}
+# GLOBAL OPTIONS
+{{ range $v := .GlobalArgs }}
+{{ $v }}{{ end }}
+{{ end }}{{ if .Commands }}
+# COMMANDS
+{{ range $v := .Commands }}
+{{ $v }}{{ end }}{{ end }}`
+
+var FishCompletionTemplate = `# {{ .App.Name }} fish shell completion
+
+function __fish_{{ .App.Name }}_no_subcommand --description 'Test if there has been any subcommand yet'
+    for i in (commandline -opc)
+        if contains -- $i{{ range $v := .AllCommands }} {{ $v }}{{ end }}
+            return 1
+        end
+    end
+    return 0
+end
+
+{{ range $v := .Completions }}{{ $v }}
+{{ end }}`
diff --git a/vendor/modules.txt b/vendor/modules.txt
new file mode 100644
index 0000000..25904b2
--- /dev/null
+++ b/vendor/modules.txt
@@ -0,0 +1,33 @@
+# github.com/NYTimes/gziphandler v0.0.0-20170804200234-967539e5e271
+## explicit
+github.com/NYTimes/gziphandler
+# github.com/cpuguy83/go-md2man/v2 v2.0.4
+github.com/cpuguy83/go-md2man/v2/md2man
+# github.com/elazarl/go-bindata-assetfs v0.0.0-20150813044622-d5cac425555c
+## explicit
+github.com/elazarl/go-bindata-assetfs
+# github.com/fatih/structs v0.0.0-20150526064352-a9f7daa9c272
+## explicit
+github.com/fatih/structs
+# github.com/gorilla/websocket v0.0.0-20150811171432-b6ab76f1fe98
+## explicit
+github.com/gorilla/websocket
+# github.com/hashicorp/go-multierror v0.0.0-20150608033521-56912fb08d85
+## explicit
+github.com/hashicorp/go-multierror
+# github.com/kr/pty v0.0.0-20150511174710-5cf931ef8f76
+## explicit
+github.com/kr/pty
+# github.com/pkg/errors v0.8.1-0.20161029093637-248dadf4e906
+## explicit
+github.com/pkg/errors
+# github.com/russross/blackfriday/v2 v2.1.0
+github.com/russross/blackfriday/v2
+# github.com/urfave/cli v1.22.15
+## explicit
+github.com/urfave/cli
+# github.com/yudai/hcl v0.0.0-20151013225006-5fa2393b3552
+## explicit
+github.com/yudai/hcl
+github.com/yudai/hcl/hcl
+github.com/yudai/hcl/json