Triaged
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https://code.djangoproject.com/ticket/26413 - Abstract model inheritance regression with string model references in 1.9 (accepted)
https://code.djangoproject.com/ticket/26418 - models.URLField does not validate with an rtmp:// url (wontfix)
https://code.djangoproject.com/ticket/26424 - Allow URLValidator to skip schemes validation (created)
https://code.djangoproject.com/ticket/26422 - Django email validator does not support parentheses (duplicate)
https://code.djangoproject.com/ticket/26423 - Make EmailValidator use HTML5 validation rather than more complicated regular expressions (created)
https://code.djangoproject.com/ticket/26432 - X/Y inverted when using numpy.reshape() on a GDALRaster's GDALBand (accepted)
https://code.djangoproject.com/ticket/26431 - translate_url() creates an incorrect URL when optional named groups are missing in the URL pattern (accepted)
https://code.djangoproject.com/ticket/26428 - Add support for relative path redirects to the test Client (accepted)
https://code.djangoproject.com/ticket/26435 - GeoIP2 return raw exception from geoip2 package (wontfix)
https://code.djangoproject.com/ticket/26436 - Error Reporting Howto should link to the sensitive keywords in the settings files (fixed)
https://code.djangoproject.com/ticket/26439 - ModelForm.save() should accept the "using" keyword argument (wontfix)
Authored
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https://github.com/django/django/pull/6365 - Fixed #26428 -- Added support for relative path redirects in assertRedirects()
Reviewed/committed
------------------
https://github.com/django/django/pull/6348 - Fixed #21734 -- Handled ProtectedError on POST to admin's delete_selected action.
https://github.com/django/django/pull/6350 - Fixed #26415 -- Allowed deleting nodata value on GDALBands.
https://github.com/django/django/pull/6356 - Fixed #26417 -- Allowed setting GDALBand data with partial values.
https://github.com/django/django/pull/6355 - Fixed #26384 -- Fixed renaming the PK on a model with a self-referential FK on SQLite.
https://github.com/django/django/pull/6346 - Fixed #11560 -- Allowed proxy model multiple-inheritance from the same concrete base model.
https://github.com/django/djangoproject.com/pull/648 - Added a language switcher for the documentation.
https://github.com/django/django/pull/6372 - Fixed #22268 -- Documented values_list() behavior for multivalued relations.
https://github.com/django/django/pull/6380 - Fixed #25699 -- Allowed using the test client if 'django.contrib.sessions' isn't in INSTALLED_APPS.
Reviews of core dev work
------------------------
https://github.com/django/django/pull/6342 - Fixed #25532 -- Properly redisplayed invalid JSONField form input values.
https://github.com/django/django/pull/6347 - Fixed #10532 -- Relaxed hard-type checking in get_object/list_or_404 shortcuts
https://github.com/django/django/pull/6257 - Fixed #19567 -- Made javascript_catalog and json_catalog class-based views.
https://github.com/django/django/pull/6353 - Fixed #26413 -- Fixed a regression with abstract model inheritance and explicit parent links.
https://github.com/django/django/pull/6351 - Fixed #21446 -- Allowed the set_language() view to return HTTP 204 on AJAX requests.
https://github.com/django/django/pull/6215 - Fixed #19670 -- Applied CachedFilesMixin patterns to specific extensions
https://github.com/django/django/pull/4726 - Refs #3254 -- Added full text search to contrib.postgres.
https://github.com/django/django/pull/6292 - Fixed #26351 -- Added database check about MySQL sql_mode variable
https://github.com/django/django/pull/6369 - Fixed #26441 -- Added model Field.db_check() method.