TypePairValue
Change entry type for Layer_SkeletonDeformation to std::pair<Bone,Bone>
Remove SkeletonDeformationEntry class
Move weightedvalue.h into VALUEHEADERS block in Makefile.am
Remove SkeletonDeformationEntry class (part 2)
Add TypePair (part 2)
Fix Layer_SkeletonDeformation
Handles for SkeletonDeformation (need to convert items to Composite)