Pyramid-beaker

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- Fixed a bug causing session saving even when it is not needed. See
https://github.com/Pylons/pyramid_beaker/pull/28

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- On Python 3, the CSRF token returned by new_csrf_token was a bytestring
instead of correctly being a string. See
https://github.com/Pylons/pyramid_beaker/pull/12

- A new argument to PyramidBeakerSessionFactoryConfig named
``constant_csrf_token`` is now permitted for test configuration purposes.
See https://github.com/Pylons/pyramid_beaker/pull/13 for more information.

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- Python 3.2 compatibility.

- Dropped Jython support (may be re-added after Jython releases a 2.7-
compatible version).

- Dropped Python 2.5 support.

- Made compatible with zope.interface 4.0.0 (symptom: ``TypeError: Class
advice impossible in Python3. Use the implementer class decorator
instead.`` when run under Python 2 or *or* Python 3)

- Add ``dev`` and ``docs`` setup.py aliases.

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- Beaker 1.6+ compat: added support for ``key_length`` and ``enabled``
options.

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- Add a tox.ini for Jenkins testing.

- Add includeme function to ease application setup.

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- The default value for the ``cookie_on_exception`` parameter to
``pyramid_beaker.BeakerSessionFactoryConfig`` is now ``True``. This means
that when view code causes an exception to be raised, and the session has
been mutated, a cookie will be sent back in the response. Previously its
default value was ``False``.