- Ensure all objects have consistent resolution orders.
2.1
================
- Claim support for Python 3.6, 3.7, PyPy and PyPy3.
- Drop support for Python 3.3.
- Drop support for ``python setup.py test``.
2.0
================
- Standardize namespace ``__init__``.
- Claim compatibility for Python 3.3, 3.4, and 3.5.
1.3
================
- ``SessionMessageSource`` implicitly created sessions when the client was reading the messages from the source. Changed internal API so reading no longer creates a session when it not yet exists.
1.2
================
* Removed test dependency on `zope.app.zcmlfiles`.