==================
- First PyPI release.
- Add support for Python 3.
- Remove nti.zodb.common. See
https://github.com/NextThought/nti.zodb/issues/1.
``ZlibClientStorageURIResolver`` will no longer try to set a ``var``
directory to store persistent cache files automatically.
- ``CopyingWeakRef`` now implements ``ICachingWeakRef``.