* Loading old (2.4x) files with keyframes now inits them properly so that keyframes are tagged as normal keyframes not breakdowns
* TrackTo consraint was flagged wrongly for adding it with a target. This meant that the target didn't get set when using the Ctrl-Shift-C hotkey.
* #19419: PoseLib rename/remove tools could crash when an invalid
(However, now care is needed when touching that index field, since the warnings can keep piling up)
* Added Browse Poses for PoseLib to the toolbar
* Removing constraints from bones now properly updates. A DAG rebuild is now forced, and the constraint flags are cleared.
* Attempting to improve the situation with Copy Rotation constraint and rotation orders other than xyz. Unforunately, it looks like a different method is required...
* Split object_edit.c into multiple files:
object_add.c, object_edit.c, object_hook.c, object_relations.c,
object_select.c, object_transform.c.
* Rename files to have consistent object_ and mball_ prefix:
object_shapekey.c, object_lattice.c, object_vgroup.c, mball_edit.c.
* Added operators:
* vertex group menu and set active
* apply location, rotation, scale, visual transform (location is new)
* make local
* make vertex parent
* move to layer
* convert to curve/mesh (not finished yet)
* Many small fixes for marked issues, but still much code to be cleaned
up here...
