craftyjs/Crafty — pull request #703 by blainesch (2014-01-23 16:19:47+00:00)
Title: Create the Crafty model component with core `attr` updates.

This is an alternative to #693

The main differences are:
* Saves data to the root of the component.
* Triggers `Change[*]` events, compared to `ChangeData` events.
* Updates on `Crafty.attr` to work with recursive setting/getting. BACKWARDS COMPATIBLE! [: