Rohansi/Mond — pull request #14 by Syke94 (2014-10-31 03:16:11+00:00)
Title: New string prototype method and object lock fix.

* Added `format()` method to string prototype. Closes #13 @Phrohdoh
* Locked objects may not be modified in any way so as to be consistent with the behaviour of the `clear()` and `add()` prototype methods.