Zope-interface

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- Drop support for 3.3, avoid accidental dependence breakage via setup.py.
See `PR 110 <https://github.com/zopefoundation/zope.interface/pull/110>`_.
- Allow registering and unregistering instance methods as listeners.
See `issue 12 <https://github.com/zopefoundation/zope.interface/issues/12>`_
and `PR 102 <https://github.com/zopefoundation/zope.interface/pull/102>`_.

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- Avoid exceptions when the ``__annotations__`` attribute is added to
interface definitions with Python 3.x type hints. See `issue 98
<https://github.com/zopefoundation/zope.interface/issues/98>`_.
- Fix the possibility of a rare crash in the C extension when
deallocating items. See `issue 100
<https://github.com/zopefoundation/zope.interface/issues/100>`_.

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- Fix a regression storing
``zope.component.persistentregistry.PersistentRegistry`` instances.
See `issue 85 <https://github.com/zopefoundation/zope.interface/issues/85>`_.

- Fix a regression that could lead to the utility registration cache
of ``Components`` getting out of sync. See `issue 93
<https://github.com/zopefoundation/zope.interface/issues/93>`_.

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- Simplify the caching of utility-registration data. In addition to
simplification, avoids spurious test failures when checking for
leaks in tests with persistent registries. See `pull 84
<https://github.com/zopefoundation/zope.interface/pull/84>`_.

- Raise ``ValueError`` when non-text names are passed to adapter registry
methods: prevents corruption of lookup caches.

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- Avoid a warning from the C compiler.
(https://github.com/zopefoundation/zope.interface/issues/71)

- Add support for Python 3.6.

------------------

- Correct typos and ReST formatting errors in documentation.

- Add API documentation for the adapter registry.

- Ensure that the ``LICENSE.txt`` file is included in built wheels.

- Fix C optimizations broken on Py3k. See the Python bug at:
http://bugs.python.org/issue15657
(https://github.com/zopefoundation/zope.interface/issues/60)