* added support for blenders materials
* added support for multiple materials per mesh
* added Multiple UV's per vert, as well as using multiple images (Blenders TEXFace)
export_cal3d.py - option to export with baked animation from posebones, added popup UI with some options, fixed object scaling, get the meshes armature if its not selected.
Bone.c - return an empty list rather then None for bone.children bone.getAllChildren()
Draw.c - per button callbacks are now have (event, value) passed