Add Rule.parser property for custom rules to specify which Markdown parser output they use, honor it strictly, and add full type support.

lib/md007.js

@@ -21,6 +21,7 @@ module.exports = {
   "names": [ "MD007", "ul-indent" ],
   "description": "Unordered list indentation",
   "tags": [ "bullet", "ul", "indentation" ],
+  "parser": "micromark",
   "function": function MD007(params, onError) {
     const indent = Number(params.config.indent || 2);
     const startIndented = !!params.config.start_indented;