dev: start parser refactor on the main codebase, see #65 and #44

Things were getting a bit complicated and slow with the old parser so I decided to continue #44's work on the main codebase.

lib/parser/contents/classes/FeedTabbedHeader.js

@@ -0,0 +1,11 @@
+'use strict';
+
+const Text = require('./Text');
+
+class FeedTabbedHeader {
+  constructor(data) {
+    this.title = new Text(data.title);
+  }
+}
+
+module.exports = FeedTabbedHeader;