Remove sanitization (#295)

* Use a separate sanitization library

The marked library deprecated its sanitizer option
and recommends to use a separate library to do all the sanitization.

* Remove any sanitization

We are not rendering in a browser, so it's not necessary to do that.

Author: agnivade

lib/parser.js

@@ -85,8 +85,7 @@ exports.parse = (markdown) => {
   };
 
   marked(markdown, {
-    renderer: r,
-    sanitize: true
+    renderer: r
   });
 
   page.examples = page.examples.filter((example) => {