refactor!: finish parser migration

Finally! :)

This removes all code related to the old parser.

#65

lib/parser/classes/TextRun.js

@@ -0,0 +1,12 @@
+'use strict';
+
+const NavigationEndpoint = require('./NavigationEndpoint');
+
+class TextRun {
+  constructor(data) {
+    this.text = data.text;
+    this.endpoint = data.navigationEndpoint ? new NavigationEndpoint(data.navigationEndpoint) : {};
+  }
+}
+
+module.exports = TextRun;