Products.zmysqlda

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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.

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- 3106015: zope 2.12/plone4 compatibility fix (thanks Mark Van den Borre)

- 3076433: column descriptions always said NOT NULL (thanks Frank Hoffmann)

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- 2357223: Savepoint support

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- Added ``Setuptools`` support to create an egg package thanks to
Brett Carter.

- Added condition to handle connection getting "out of sync". This can occur
when, for instance, you get a stray semicolon in a query. When a connection
gets in this state it is hosed and must be closed and reconnected.

- Made some changes to how ``use_unicode`` and ``auto_create_db`` are set to
better allow for subclassing and extensions of the base classes.

- Added handling of NEWDECIMAL which was added for mysql 5.0.

- Added basic support for procedure calls using ``CALL`` query.

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- Fixed issue with ``sql_quote__`` getting called prior to connection being made.

- Fixed bug 1916952. Updating to API change in MySQLdb 1.2.2 ping method.

- Fixed backwards compatibility issue with MySQLdb versions <= 1.2.1.