Version 0.5.7 - June 21, 2010
=============================
- get_property_dict() was renamed to get_entity_dict() (old name is still
  valid).
- get_entity_dict() now accepts a list of entities, not only a single one.
- added get_entity_properties().


Version 0.5.6 - June 6, 2010
============================
- Made pytz optional - it is only required by TimezoneProperty.


Version 0.5.5 - June 1st, 2010
==============================
- Fixed namespace warnings.


Version 0.5.4 - May 31, 2010
============================
- Initial release: moved from tipfy core to a separate extension.
