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* Slovak translation (jbub).
* Deleting a user no longer deletes the associated revisions (daaray).
* Improving handling of inline models in admin integration (blueyed).
* Improving error messages for proxy model registration (blueyed).
* Improvements to using migrations with custom user model (aivins).
* Removing sys.exit() in deleterevisions management command, allowing it to be used internally by Django projects (tongwang).
* Fixing some backwards-compatible admin deprecation warnings (Thomas Schreiber).
* Fixing tests if RevisionMiddleware is used as a decorator in the parent project (jmoldow).
* Derived models, such as those generated by deferred querysets, now work.
* Removed deprecated low-level API methods.