Log Message:
Changes 1.2.3:
Add support for Django 1.7
Fix floating point inaccuracy with Python v2
Fix cursor trying  to decode linestring data as utf-8
Fix Django TimeField 00:00:00 converting to MySQL NULL
Fix Django to check connection on each request
Fixed negative conversion timedelta values
Fix stopping mysqld running unit tests on Windows
Fix prepared statements returning lots of columns
Fix Connector/Python dependency for utilities 1.5.1
Fix exception not captured when SSL is unavailable