smart_unicode does not exist with Python 3 / Django 1.5.
Fix implicit relative import.
Fix use of iteritems()
Make a bytes literal explicit.
Make CacheKey hashable in Python 3.
Handle __str__/__unicode__ correctly for Python 2/3.
No basestring in Python 3.
Map returns an iterator in Python 3.
Add Python version trove classifiers.
Adding Carl Meyer to the authors file.
Adding changelog for the 0.10.0 release.
Bumping to version 0.10.0.  Huge thanks to Carl Meyer for adding Python 3 support.