Added CC3Remove action to remove a node as part of an action sequence.

Added CC3Remove action to remove a node as part of an action sequence.
Support 4x3 matrix stacks and uniforms.

Support 4x3 matrix stacks and uniforms.
Added stand-alone parsing to CC3BitmapFontConfiguration.

CC3BMFontConfiguration renamed to CC3BitmapFontConfiguration, removed as subclass
of CCBMFontConfiguration, and file parsing separated from former parent class.
Add embedded cocos2d 2D nodes in CC3Billboard.

Add embedded cocos2d 2D nodes in CC3Billboard. Sync 2D matrix stack with 3D stack.
Sync vertex attribute enablement between 3D and 2D content. Enable billboards in
CC3DemoMashUp demo app.
Consolidate CC3VertexArrayMesh, CC3SkinMesh & CC3PointParticleMesh subclasses
into parent CC3Mesh class

Consolidate CC3VertexArrayMesh, CC3SkinMesh & CC3PointParticleMesh subclasses
into parent CC3Mesh class. Consolidate vertex locations bounding volume classes
into parents.
Regenerate cocos3d Xcode template project file list.

Regenerate cocos3d Xcode template project file list.
Clean up template project scene code.
Added support for tangent and bitangents vertex content and tangent-space bump-mapping.

Added support for tangent and bitangents vertex content to CC3MeshNode & CC3Mesh.
Added CC3VertexTangents vertex array class. CC3PODMaterial populates tangent and
bitangent vertex content from POD files. Populate tangent & bitangent vertex content
from POD files. Addd EtchedMask tangent-space normal example to CC3DemoMashUp demo app.
Combine both CC3DemoMashUp mask effects into a single PFX file.

Combine both CC3DemoMashUp mask effects into a single PFX file. Document the
two masks in the CC3DemoMashUpScene notes description.