------------------
- Fixed using SplitField on an abstract base model.
- Fixed issue 8, adding ``use_for_related_fields = True`` to
``InheritanceManager``.
- Added ``PassThroughManager``. Thanks Paul McLanahan.
- Added pending-deprecation warnings for ``InheritanceCastModel``,
``manager_from``, and Django 1.1 support. Removed documentation for the
deprecated utilities. Bumped ``ChoiceEnum`` from pending-deprecation to
deprecation.
- Fixed issue 6, bug with InheritanceManager and descriptor fields (e.g.
FileField). Thanks zyegfryed for the fix and sayane for tests.