Bump version and remove unused variables.
Added .jshintrc
Added some "use strict"-statements.
WebGL: Add some padding to the characters in the texture.
Character padding should always be even.
Initialize viewport tiles.

Makes it easier to use without ut.Engine.
Added ut.Tile.copy(other) function.
Added new example: Raycaster.
Update version history.
Build docs.
Version 2.1.