I was careful in selectively rolling back revisions, but if you've committed changes unrelated to BPY mixed with BPY changes, I might have reverted those too, so please double check.
smooth view now works for change between cameras, smooth view now blends the lens angle too.
moved bpy into bpy.data and bpy will be eventually replace the root level 'Blender' module. currently we have bpy.library bpy.config and bpy.data