refactor!: finish parser migration

Finally! :)

This removes all code related to the old parser.

#65

lib/parser/classes/menus/MultiPageMenuNotificationSection.js

@@ -0,0 +1,17 @@
+'use strict';
+
+const Parser = require('../..');
+
+class MultiPageMenuNotificationSection {
+  type = 'MultiPageMenuNotificationSection';
+
+  constructor(data) {
+    this.items = Parser.parse(data.items);
+  }
+
+  get contents() {
+    return this.items;
+  }
+}
+
+module.exports = MultiPageMenuNotificationSection;