Triaged
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https://code.djangoproject.com/ticket/27520 - sqlmigrate generates a duplicate DROP INDEX statement (duplicate)
https://code.djangoproject.com/ticket/27483 - Add a login_required decorator for AJAX requests (wontfix)
https://code.djangoproject.com/ticket/27498 - Filtering annotated field in SQLite returns wrong results (accepted)
https://code.djangoproject.com/ticket/27521 - QueryDict is inconsistently converted to kwargs between CPython and PyPy (needsinfo)
https://code.djangoproject.com/ticket/27528 - No default object-level permissions provider (duplicate)
https://code.djangoproject.com/ticket/27538 - Value of JSONField is being re-encoded to string even though being already encoded (worksforme)
Reviewed/committed
------------------
https://github.com/django/django/pull/7583 - Completed django.dispatch test coverage.
https://github.com/django/django/pull/7370 - Fixed #27295 -- Added a system check to prohibit model names that start or end with an underscore or contain double underscores.
https://github.com/django/django/pull/7449 - Fixed #27250 -- Removed 'for ="..."' from CheckboxSelectMultiple's <label>.
https://github.com/django/django/pull/7554 - Fixed #27221 -- Doc'd how to escape a percent symbol in ugettext().
https://github.com/django/django/pull/7594 - Added tests for contrib.sitemaps.ping_google().
https://github.com/django/django/pull/7577 - Fixed #27504 -- Allowed using the ORM after an error and rollback when autocommit is off.
https://github.com/django/django/pull/7571 - Fixed #24959 -- Fixed queries using negative timedeltas on MySQL and Oracle.
https://github.com/django/django/pull/7567 - Fixed #27499 -- Made Prefetches pickle without evaluating their QuerySet.
https://github.com/django/django/pull/7550 - Fixed #25966 -- Made get_user_model() work at import time.
https://github.com/django/django/pull/7523 - Fixed #24370 -- Recommended starting with a custom user model.
https://github.com/django/django/pull/7588 - Fixed #27517 -- Fixed charset param in SimpleTemplateResponse.__init__().
https://github.com/django/django/pull/7603 - Fixed #27532 -- Deprecated Model._meta.has_auto_field