Add check in RigTransformSoftware if bones are null
Indent TimelineAnimationManager
Add check for NaN in UpdateCallback.cpp
Fix TimelineAnimationManager clear target (a refactore of Timeline is require for futur)
Fix Computation of bounding box for RigGeometry
Finally, I have fixed TemplateTarget<osg::Quat>::lerp() as it was giving incorrect results when interpolating between some small rotations.
From Cedric Pinson, i renamed the method in channel to be more general. Adjusted the CubicBezier key constructor to use a single value as input.
