Changed matrix setting function to the right name.
Changed rendering method at rendering objects. Camera isn't an argument making the call to the render method.
Changed rendering method at renderers. Now there's no need to pass the
camera whrn calling the render method. Instead camera should be passed at
the start method.
Canvas now allows for a style change.
Implemented clear color at CanvasRenderer, making use of a background
canvas, that is only repainted when the clear color changes.
Fixed bugs at WireframeRenderer.
Fixed WebGL buffer creation of textures, there's no access to private
properties of Texture.
Changed WebGL texture rendering method. textureCenter uniform wasn't
needed.
Added method unuse at WebGLProgram. Everytime a program is changed the
old one need to call this method, to disable VAA of each attribute.