Fixed map rendering. The rendering is no more limited at the tiles grid and the map can be scrolled at negative positions
Entity now accepts a size diferent than it's tile. Also the tile can be draw with an offset
Added events to Game class.
Spawn now accepts the entity with and height as optional values
Fixed scale, now it zooms at the center of the canvas
Missed emitter class.
Upgraded test game.
The screen follows the player