  
  * Support for ``cx_Oracle`` < 6.0 is removed.
  
  * In an attempt to provide more semantic query data, ``NullBooleanSelect`` now
    renders ``<option>`` values of ``unknown``, ``true``, and ``false`` instead
    of ``1``, ``2``, and ``3``. For backwards compatibility, the old values are
    still accepted as data.
  * :attr:`Group.name <django.contrib.auth.models.Group.name>` ``max_length``
    is increased from 80 to 150 characters.
 
</s> remove if version < (1, 3, 7):
    raise ImproperlyConfigured('mysqlclient 1.3.7 or newer is required; you have %s.' % Database.__version__)
 </s> add if version < (1, 3, 13):
    raise ImproperlyConfigured('mysqlclient 1.3.13 or newer is required; you have %s.' % Database.__version__) </s> remove Django requires `mysqlclient`_ 1.3.7 or later.
 </s> add Django requires `mysqlclient`_ 1.3.13 or later.
* The minimum supported version of ``mysqlclient`` is increased from 1.3.7 to
  1.3.13.

  
  * Support for ``cx_Oracle`` < 6.0 is removed.
  
* The minimum supported version of ``mysqlclient`` is increased from 1.3.7 to
  1.3.13.

  * In an attempt to provide more semantic query data, ``NullBooleanSelect`` now
    renders ``<option>`` values of ``unknown``, ``true``, and ``false`` instead
    of ``1``, ``2``, and ``3``. For backwards compatibility, the old values are
    still accepted as data.
  * :attr:`Group.name <django.contrib.auth.models.Group.name>` ``max_length``
    is increased from 80 to 150 characters.
keep keep add keep keep keep keep keep keep
 Bumped mysqlclient requirement to >= 1.3.13.

There are test failures with older versions. 
docs/releases/2.2.txt