Triaged
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https://code.djangoproject.com/ticket/26807 - Document how to replicate SubfieldBase behavior of calling to_python on assignment (accepted)
https://code.djangoproject.com/ticket/26813 - ModelForm RadioSelect widget for foreign keys should not present a blank option if blank=False on the model (accepted)
https://code.djangoproject.com/ticket/26820 - Reverse join in `exclude` fails when GenericRelation is defined on an abstract model (duplicate)
https://code.djangoproject.com/ticket/26812 - APPEND_SLASH doesn't work with URLs that have query strings (wontfix)
https://code.djangoproject.com/ticket/26815 - Addition of Trunc may have altered the ordering of dates() queries (needsinfo)
https://code.djangoproject.com/ticket/26822 - New migrations not applied on clone databases (sqlite) when using --parallel and --keepdb option (accepted)
https://code.djangoproject.com/ticket/26826 - dumpdata command using multiple pks that are UUIDs produces error (accepted)
https://code.djangoproject.com/ticket/26825 - MultipleObjectMixin and DB don't work together (invalid)
https://code.djangoproject.com/ticket/26823 - auth signal receiver update_last_login not compatible with custom user models that have no last_login field (accepted)
Authored
--------
https://github.com/django/django/pull/6841 - Replaced use of TestCase.fail() with assertRaises().
Reviewed/committed
------------------
https://github.com/django/django/pull/6726 - Fixed #26709 -- Added class-based indexes.
https://github.com/django/django/pull/6768 - Fixed #26751 -- Made dbshell exit with the shell's error code.
https://github.com/django/django/pull/6813 - Fixed #26784 -- Made ForeignKey.validate() pass `model` to router if model_instance=None.
https://github.com/django/django/pull/6806 - Fixed #26779 -- Added extra_context parameter to admin’s i18n_javascript view.
https://github.com/django/django/pull/6774 - Fixed #26171 -- Made MySQL create an index on ForeignKeys with db_contraint=False.
https://github.com/django/django/pull/6843 - Fixed #15091 -- Allowed passing custom encoder to JSON serializer.
https://github.com/django/django/pull/6826 - Fixed #26786 -- Avoided redundant max value validators on integer fields.
https://github.com/django/django/pull/6840 - Fixed #24694 -- Added support for context_processors to Jinja2 backend.
https://github.com/django/django/pull/6010 - Fixed #26119 -- Fixed URLValidator crash on URLs with brackets.
https://github.com/django/django/pull/6500 - Refs #23386 -- Documented that F() expressions are applied on each model.save()
https://github.com/django/django/pull/6504 - Fixed #19513, #18580 -- Fixed crash on QuerySet.update() after annotate().
https://github.com/django/django/pull/6834 - Fixed #25694 -- Removed incorrect _uniq suffix on index names during migrations.
https://github.com/django/django/pull/6852 - Fixed #25292 -- Fixed crash in ManyToManyField.through_fields check.
https://github.com/django/django/pull/6343 - Fixed #21548 -- Added FileExtensionValidator and validate_image_file_extension.