Files
blockly/accessible/libs

This folder contains the following dependencies for accessible Blockly:

* Angular2 (angular2-all.umd.min.js, angular2-polyfills.min.js)
* RxJava (Rx.umd.min)

Used for data binding between the core Blockly workspace and accessible Blockly.
RxJava is required by Angular2.
Fetched from https://code.angularjs.org/
The current version is 2.0.0-beta.16.

* ES6 Shim

Required by Angular2, for Javascript files.
Fetched from https://github.com/paulmillr/es6-shim
The current version is 0.35.1.