[Bf-python] Python API proposals

[Dima Glibitsky]

> A while ago worked on a python branch that didnt end up being merged,
> but python ID references worked across undo, I'll look at making a
> patch to trunk to support it again (Ton really didn't like ID's
> holding references to PyObject's this, so no guarantee it will get
> in).
> - added to my todo list - http://wiki.blender.org/index.php/User:Ideasman42#TODO

Thanks! That would be awesome.