==================
- Add support for Python 3.5 and 3.6.
- Drop support for Python 2.6 and 3.3.
- Drop support for ``python setup.py test``.
- Test PyPy3 on Travis CI.
- Stop requiring all values to support pickling in order to get
statistics. Instead, return ``False`` for the size if such a value
is found. Fixes `issue 1 <https://github.com/zopefoundation/zope.ramcache/issues/1>`_.
- Change the internal storage format of the RAM cache to require less
memory and be easier to maintain.