----- . Use ``_default_manager`` instead of ``objects`` manager to allow for overrides.
0.0.5
----- . Only pass fields that support an exact lookup to get_or_create.
0.0.4
----- . Use `exists` optimisation. . Force commit on every execution of method since settings may specify a transaction managed database layer. . Prevent redundant calls to save(). . Support direct assignment of foreign key ids.