this could be supported again easily however it leads typo's & api changes not showing any errors.
This broke povray export.
Solution for now is to allow setting private properties starting with '_'
eg,
ob = bpy.context.object
ob._foo = [1,2,3] # this is a python list, it will stay only as long as this PyObject is active
ob.foo = 1 # raises an error!, only for rna properties
ob["foo"] = 1 # converts to an ID property and is saved
using the underscore like this should really be used for classes internally.
- povray failed on armatures
- menu key wasn't using WM_keymap_add_menu