Add vertex skinning (bone rigging).

Add vertex skinning (bone rigging). Add touch selection of skinned nodes.
Add setting GL programs and applying PFX effects to a node hierarchy.
Add automatic support for normalized POD vertex content.

Add automatic support for normalized POD vertex content.
Fixed incorrrect reporting of punctured nodes behind the ray.

Fixed issue where punctured nodes request sometimes incorrectly included
nodes that were behind the ray.
Add support for shadow volumes.

Add support for shadow volumes.
Add support for spot lights and light attenuation.

Add support for spot lights and light attenuation.
Fixed issue re tracking positional lights for object-space bump mapping.

Added CC3Node globalHomogeneousPosition property and deprecated CC3Light
homogeneousLocation property. Added CC3Node globalLightPosition property
and deprecated globalLightPosition property.
Replaced use of CCC4FMake function with ccc4f function for brevity.

Replaced use of CCC4FMake function with ccc4f function for brevity.
Add fog effects.

Add fog effects.