- added python2.4 compatibility. Contributed by Charles Leifer. Thanks!
- general reorganization of the code - there is no single polymorphic.py module anymore,
so d-p now needs to be installed as a regular Django app
- polymorphic.VERSION/get_version added
- version numbering started: V0.5 beta
this occurred if a subclass defined __init__ and accessed class
members before calling the superclass __init__
(__getattribute__ had a problem, as "sub_and_superclass_dict" was set in __init__).