Implemented new initialization flow + add time() method to Utils
Removed Vector class from core. Use Colliders.Vector instead
Added EventEmitter to core docs
Updated EventEmitter docs
I forgot to commit this removed file
Implemented EventEmitter
Added some events to core
Updated sound-basic plugin to take advantage of the new events
Added the possibility to add a listener to an EventEmitter that gets called on every event
Fixed a small bug in EventEmitter
Added EventEmitter to the Game prototype
Fixed small bug in EventEmitter
Updated some plugins to take advantage of events
Tests: call game.init() before doing something with plugins
Updated some docs
Updated draw-canvas plugin to reflect changes in docs
Added a sample save file
Updated .gitignore