==================
- Add support for PyPy.
- Add support for continuous integration using ``tox`` and ``jenkins``.
- Add a pure-Python reference implementation.
- Move doctests to Sphinx documentation.
- Bring unit test coverage to 100%.
- Add 'setup.py docs' alias (installs ``Sphinx`` and dependencies).
- Add 'setup.py dev' alias (runs ``setup.py develop`` plus installs
``nose`` and ``coverage``).
- Drop support for Python 2.4 / 2.5.
- Remove of 'zope.testing.doctestunit' in favor of stdlib's 'doctest.
- Add Python 3 support.