Update mysqlclient to 1.3.14

[pyup-bot]

This PR updates mysqlclient from 1.3.13 to 1.3.14.

Changelog

1.3.14

======================

Release: 2018-12-04

* Support static linking of MariaDB Connector/C (265)

* Better converter for Decimal and Float (267, 268, 273, 286)

* Add ``Connection._get_native_connection`` for XTA project (269)

* Fix SEGV on MariaDB Connector/C when ``Connection.close()`` is called
for closed connection. (270, 272, 276)

* Fix ``Connection.client_flag`` (266)

* Fix SSCursor may raise same exception twice (282)

* ``waiter`` option is now deprecated. (285)

* Fixed SSL support is not detected when built with MySQL < 5.1 (291)


======================

Links

• PyPI: https://pypi.org/project/mysqlclient
• Changelog: https://pyup.io/changelogs/mysqlclient/
• Repo: https://github.com/PyMySQL/mysqlclient-python

[pyup-bot]

Closing this in favor of #550