TODO: Besides splitting this out from previous commit, should really avoid markdown field in favor of modifying jsdoc to report wherever it lays out "prettyprint"; still probably missing some one-liners; see https://github.com/google/code-prettify; update builds to confirm new stackblur is working; add below to CHANGES; add back for eslint-plugin-jsdoc once merged (though need new version ^3.9.1); move any linting changes to other linting branch

- Refactoring (minor): Add favicon to canvas demo
- Linting (ESLint Markdown JavaScript): Add `eslint-plugin-markdown` with
  slightly loosened config (`no-undef` and `padded-blocks` off and
  `no-unused-vars` as a warning)
- Linting (ESLint JSDoc code comments): Add `eslint-plugin-jsdoc` and apply to
    JSDoc code comments
- Linting (ESLint): Completely avoid unescaped tabs in files
- Docs (Linting): Add linting info file
- npm: Rename `copy-deps` script to `copy`
- Refactoring: Add stackblur-canvas as a dependency and copy it in (until such time as we can do so for canvg)

editor/extensions/ext-foreignobject.js

@@ -49,11 +49,10 @@ export default {
     /**
     * This function sets the content of element elt to the input XML.
     * @param {string} xmlString - The XML text
-    * @param {Element} elt - the parent element to append to
     * @returns {boolean} This function returns false if the set was unsuccessful, true otherwise.
     */
     function setForeignString (xmlString) {
-      const elt = selElems[0];
+      const elt = selElems[0]; // The parent `Element` to append to
       try {
         // convert string into XML document
         const newDoc = text2xml('<svg xmlns="' + NS.SVG + '" xmlns:xlink="' + NS.XLINK + '">' + xmlString + '</svg>');