Products.zmysqlda

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- fix database version detection for savepoint support
(`7 <https://github.com/zopefoundation/Products.ZMySQLDA/issues/7>`_)

- remove explicit ``setuptools`` version pin in ``setup.py``
(`11 <https://github.com/zopefoundation/Products.ZMySQLDA/issues/11>`_)

- more strict flake8 code style compliance

- trove classifier cleanup

- buildout configuration cleanup

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- When editing a connection in the ZMI, show an error message and not
an exception when the connection fails.

- ZMI usability enhanced by providing feedback when editing a connection

- Specify supported Python versions using ``python_requires`` in setup.py

- Added support for Python 3.8

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- additional compatibility fixes for mysqlclient 14.0 and up

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- compatibility fix for mysqlclient 14.0 and up

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- added the ability to set the MySQL connection character set
separate from the unicode flag.

- make the checkboxes on the add view work correctly

- declare (and test for) Python 3.7 compatibility

- make the checkboxes on the `Properties` ZMI tab work

- added missing ``six`` dependency declaration

- add some functional tests that require a running database server,
see the documentation for how to set it up.

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- New maintainers: SNTL PUBLISHING / HOFFMANN+LIEBENBERG GMBH and
Jens Vagelpohl

- Moved away from the unsupported ``MySQLdb1`` to the fork
``mysqlclient``, which is Python 3-compatible.

- Added simple buildout configuration with tox integration

- Zope 4 and Python 3 compatibility

- Added unit tests

- Added some ``Sphinx``-based documentation and copied any useful
items from the old ``HelpSys`` files.

- Removed the hurt system files.

- Improved the ``Browse`` tab with more table information.