fixes and library updates

lib/JSDOMParser.js

@@ -1,5 +1,3 @@
-// https://github.com/mozilla/readability/tree/814f0a3884350b6f1adfdebb79ca3599e9806605
-
 /*eslint-env es6:false*/
 /* This Source Code Form is subject to the terms of the Mozilla Public
  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
@@ -310,6 +308,7 @@
       }
     }
     getElems(this);
+    elems._isLiveNodeList = true;
     return elems;
   }