Added non compressed version of easeljs for debugging
Added coordinates mapping

* Added Block to stage
* Fixed Player regY value
* Adding collidable entities to Collidable.entities array
Removed .DS_Store file from repo
Removing line added by mistake
Replaced mixins init calls for event registrations
Mixins now automatically include dependencies
Drawing bounding box for entities and fixed mixins hell
Replaced _vars for actual private vars
Removed usless check from Initializable
Added z-index support