Fix WebGL renderer squarify.
Split renderers into separate files.
A little less math in CanvasRenderer.render()
Move renderers' render and clear functions to prototype.
Move renderers' updateStyle and some other things to prototype.
WebGL renderer now caches new characters automatically.
Update TODO.
DOMRenderer uses colors from parent by default. Needs a test.
Removed numbering from test names.
New performance test: big tiles.
Another new performance test: lots of tiles.
Yet another performance test: huge viewport.
Remove type-attribute from script tags. Not needed in HTML5.
Added a functional test: all examples.
Another functional test: lots of unicode.

Uncovered a bug in WebGLRenderer.
Render-switcher for lots-of-unicode test.
Partially fix WebGLRenderer to handle lots of chars.
Change render switcher direction.
Fix texcoord issue with WebGLRenderer.
New functional test: odd tile size.