FEATURE: actions for rotate/scale/mirror/shear selection
Now Rotate/Scale/Mirror/Shear Layer actions also support
handling a selection. If there is a selection active, then
the action will transform selected content only.
Now there are also 8 new actions, that will rotate/scale/
mirror/shear *all* layers without resizing the image. These
actions can also handle selections.
- when no selection present, the actions transform *all* the frames of the layers in question
- when there is a selection active, only current frame is transformed