Zope.sequencesort

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- Nothing changed yet.

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- Add support for Python 3.11.

- Drop support for Python 2.7, 3.5, 3.6.

- Drop support for deprecated ``python setup.py test``.

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- Fix a TypeError exception in ``cmp`` when operands are ``None``.
See `issue 7 <https://github.com/zopefoundation/zope.sequencesort/issues/7>`_.

- Drop support for Python 3.4.

- Add support for Python 3.8, 3.9 and 3.10.

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- Fix regression introduced in 4.1.1 where two `_Smallest` objects are no
longer considered to be equal.

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- Handle sorting of broken objects more gracefully.
(`4 <https://github.com/zopefoundation/zope.sequencesort/pull/4>`_)

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- Updated ``boostrap.py`` to version 2.2.

- Drop support for Python 2.6, 3.2 and 3.3.

- Add support for Python 3.4, 3.5, 3.6 and 3.7.

- The locale comparison functions, ``strcoll`` and ``strcoll_nocase``
are always available, not only if the ``locale`` module had been
imported before this module.