Bug520 PickingColliderBase UV
added new perspectiveoffcenterlens class
Merge pull request #522 from JohnBrookes/Bug520

Bug520 PickingColliderBase UV
Removed unused vars.
MeshDebugger update
MeshDebug: added empty constructor and fix CRLF
UVAnimator. Fixes broken animator. Added non frame-based features such as auto rotation and auto translate. In order to create on the fly efficient map scrolls and endless rotations.
UVAnimator. Check on null vector
add ParticleInitialColor to allow set different initial color for each particle
fix the color register conflict
corrected setters for v0Index, v1Index, v2Index. fixes #504
update comments for multipass & singlepass materials. closes #494
updated convertToSeparateBuffers to ensure the subgeometry array is
correctly stepped through. Fixes #491