===========================Django 1.11.2 release notes===========================*June 1, 2017*Django 1.11.2 adds a minor feature and fixes several bugs in 1.11.1. Also, thelatest string translations from Transifex are incorporated.Minor feature=============The new ``LiveServerTestCase.port`` attribute reallows the use case of bindingto a specific port following the :ref:`bind to port zero<liveservertestcase-port-zero-change>` change in Django 1.11.Bugfixes========* Added detection for GDAL 2.1 and 2.0, and removed detection for unsupportedversions 1.7 and 1.8 (:ticket:`28181`).* Changed ``contrib.gis`` to raise ``ImproperlyConfigured`` rather than``GDALException`` if ``gdal`` isn't installed, to allow third-party apps tocatch that exception (:ticket:`28178`).* Fixed ``django.utils.http.is_safe_url()`` crash on invalid IPv6 URLs(:ticket:`28142`).* Fixed regression causing pickling of model fields to crash (:ticket:`28188`).* Fixed ``django.contrib.auth.authenticate()`` when multiple authenticationbackends don't accept a positional ``request`` argument (:ticket:`28207`).* Fixed introspection of index field ordering on PostgreSQL (:ticket:`28197`).* Fixed a regression where ``Model._state.adding`` wasn't set correctly onmulti-table inheritance parent models after saving a child model(:ticket:`28210`).* Allowed ``DjangoJSONEncoder`` to serialize``django.utils.deprecation.CallableBool`` (:ticket:`28230`).* Relaxed the validation added in Django 1.11 of the fields in the ``defaults``argument of ``QuerySet.get_or_create()`` and ``update_or_create()`` toreallow settable model properties (:ticket:`28222`).* Fixed ``MultipleObjectMixin.paginate_queryset()`` crash on Python 2 if the``InvalidPage`` message contains non-ASCII (:ticket:`28204`).* Prevented ``Subquery`` from adding an unnecessary ``CAST`` which resulted ininvalid SQL (:ticket:`28199`).* Corrected detection of GDAL 2.1 on Windows (:ticket:`28181`).* Made date-based generic views return a 404 rather than crash when given anout of range date (:ticket:`28209`).* Fixed a regression where ``file_move_safe()`` crashed when moving files to aCIFS mount (:ticket:`28170`).* Moved the ``ImageField`` file extension validation added in Django 1.11 fromthe model field to the form field to reallow the use case of storing imageswithout an extension (:ticket:`28242`).