==================
- Add support for Python 3.4, 3.5, 3.6 and PyPy.
- Change dependency on ``ZODB3`` to ``ZODB``.
- The ``browser.zcml`` will only be loaded if ``zope.browserpage`` is
installed.
- Accessing the ``__parent__`` and ``__name__`` attributes of broken
objects will no longer raise ``AttributeError`` if the state is an
unexpected type, instead returning ``None``.