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

lib/md053.js

@@ -12,6 +12,7 @@ module.exports = {
   "names": [ "MD053", "link-image-reference-definitions" ],
   "description": "Link and image reference definitions should be needed",
   "tags": [ "images", "links" ],
+  "parser": "none",
   "function": function MD053(params, onError) {
     const ignored = new Set(params.config.ignored_definitions || [ "//" ]);
     const lines = params.lines;