* Added 'set handle-type' operator. Currently, all possible handle types are all set using a menu and HKEY. This will need to be reviewed at some point, but I think it should be easier for users to remember 1 hotkey for this, rather than 4 scattered around the place.
* Added 'set interpolation' operator. This uses the Shift-T hotkey as before (for now). As in AnimSys2, this sets per-keyframe interpolation.
* Remapped toggle frames/time-codes operator to Ctrl-T key. This may still change, but the TKEY needs to be free for transform tool here.