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==========================
Django 1.8.3 release notes
==========================
*Under development*
Django 1.8.3 fixes several bugs in 1.8.2.
Also, ``django.utils.deprecation.RemovedInDjango20Warning`` was renamed to
``RemovedInDjango110Warning`` as the version roadmap was revised to 1.9, 1.10,
1.11 (LTS), 2.0 (drops Python 2 support). For backwards compatibility,
``RemovedInDjango20Warning`` remains as an importable alias.
Bugfixes
========
* Fixed ``BaseRangeField.prepare_value()`` to use each ``base_field``’s
``prepare_value()`` method (:ticket:`24841`).
* Fixed crash during :djadmin:`makemigrations` if a migrations module either
is missing ``__init__.py`` or is a file (:ticket:`24848`).
* Fixed ``QuerySet.exists()`` returning incorrect results after annotation with
``Count()`` (:ticket:`24835`).
* Corrected ``HStoreField.has_changed()`` (:ticket:`24844`).
* Reverted an optimization to the CSRF template context processor which caused
a regression (:ticket:`24836`).
* Fixed a regression which caused template context processors to overwrite
variables set on a ``RequestContext`` after it's created (:ticket:`24847`).
* Prevented the loss of ``null``/``not null`` column properties during field
renaming of MySQL databases (:ticket:`24817`).
* Fixed a crash when using a reverse one-to-one relation in
``ModelAdmin.list_display`` (:ticket:`24851`).
* Fixed quoting of SQL when renaming a field to ``AutoField`` in PostgreSQL
(:ticket:`24892`).
* Fixed lack of unique constraint when changing a field from
``primary_key=True`` to ``unique=True`` (:ticket:`24893`).
* Fixed queryset pickling when using ``prefetch_related()`` after deleting
objects (:ticket:`24831`).
* Allowed using ``choices`` longer than 1 day with ``DurationField``
(:ticket:`24897`).
* Fixed a crash when loading squashed migrations from two apps with a
dependency between them, where the dependent app's replaced migrations are
partially applied (:ticket:`24895`).
* Fixed recording of applied status for squashed (replacement) migrations
(:ticket:`24628`).
* Fixed queryset annotations when using ``Case`` expressions with ``exclude()``
(:ticket:`24833`).
* Corrected join promotion for multiple ``Case`` expressions. Annotating a
query with multiple ``Case`` expressions could unexpectedly filter out
results (:ticket:`24924`).
* Fixed usage of transforms in subqueries (:ticket:`24744`).
* Fixed ``SimpleTestCase.assertRaisesMessage()`` on Python 2.7.10
(:ticket:`24903`).
* Provided better backwards compatibility for the ``verbosity`` argument in
``optparse`` management commands by casting it to an integer
(:ticket:`24769`).
* Fixed ``prefetch_related()`` on databases other than PostgreSQL for models
using UUID primary keys (:ticket:`24912`).
* Fixed removing ``unique_together`` constraints on MySQL (:ticket:`24972`).
* Fixed crash when uploading images with MIME types that Pillow doesn't detect,
such as bitmap, in ``forms.ImageField`` (:ticket:`24948`).
* Fixed a regression when deleting a model through the admin that has a
``GenericRelation`` with a ``related_query_name`` (:ticket:`24940`).
* Reallowed non-ASCII values for ``ForeignKey.related_name`` on Python 3 by
fixing the false positive system check (:ticket:`25016`).
* Fixed inline forms that use a parent object that has a ``UUIDField`` primary
key and a child object that has an ``AutoField`` primary key
(:ticket:`24958`).
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