Updated the examples to work with the new texture manager.  The texture compression example isn't working yet.
Added a new example showing specular maps and alpha maps.
The compressed texture is now working. Started setting up a video texture example.
Added a video texture renderer example.
removed 'old' animations
Refactored the Number3D class into Vector3 and Vector2D into Vector2.
A drastic change but necessary. See also issue #586
Updated the skeletal animation example to reflect the new class names.