Update mysqlclient to 1.4.2.post1

[pyup-bot]

This PR updates mysqlclient from 1.3.13 to 1.4.2.post1.

Changelog

1.4.2

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

Release: 2019-02-08

* Fix Django 1.11 compatibility. (327)
mysqlclient 1.5 will not support Django 1.11.  It is not because
mysqlclient will break backward compatibility, but Django used
unsupported APIs and Django 1.11 don't fix bugs including
compatibility issues.

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

1.4.1

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

Release: 2019-01-19

* Fix dict parameter support (323, regression of 1.4.0)

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

1.4.0

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

Release: 2019-01-18

* Dropped Python 3.4 support.

* Removed ``threadsafe`` and ``embedded`` build options.

* Remove some deprecated cursor classes and methods.

* ``_mysql`` and ``_mysql_exceptions`` modules are moved under
``MySQLdb`` package. (293)

* Remove ``errorhandler`` from Connection and Cursor classes.

* Remove context manager API from Connection.  It was for transaction.
New context manager API for closing connection will be added in future version.

* Remove ``waiter`` option from Connection.

* Remove ``escape_sequence``, and ``escape_dict`` methods from Connection class.

* Remove automatic MySQL warning checking.

* Drop support for MySQL Connector/C with MySQL<5.1.12.

* Remove ``_mysql.NULL`` constant.

* Remove ``_mysql.thread_safe()`` function.

* Support non-ASCII field name with non-UTF-8 connection encoding. (210)

* Optimize decoding speed of string and integer types.

* Remove ``MySQLdb.constants.REFRESH`` module.

* Remove support for old datetime format for MySQL < 4.1.

* Fix wrong errno is raised when ``mysql_real_connect`` is failed. (316)


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

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)

* This removed ``Cursor._last_executed`` which was duplicate of ``Cursor._executed``.
 Both members are private.  So this type of changes are not documented in changelog
 generally.  But Django used the private member for ``last_executed_query`` implementation.
 If you use the method the method directly or indirectly, this version will break
 your application.  See https://code.djangoproject.com/ticket/30013

* ``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 #626