Triaged
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https://code.djangoproject.com/ticket/27675 - Django postgres JSONField encoding (needsinfo)
https://code.djangoproject.com/ticket/27679 - Document that empty formsets display min_num+extra forms (accepted)
https://code.djangoproject.com/ticket/27690 - remove sleep before dropping test db (accepted)
https://code.djangoproject.com/ticket/27687 - Dateformat issue using django basic logging formatter (invalid)
https://code.djangoproject.com/ticket/27664 - Manager.contribute_to_class() is called with abstract model rather than concrete model (needsinfo)
https://code.djangoproject.com/ticket/27677 - Disable savepoint support for MySQL NDB engine tables, and option to overwrite the default. (wontfix)
https://code.djangoproject.com/ticket/27684 - Migrations accept default value for DateField that are not portable to all backends (duplicate)
https://github.com/pallets/jinja/issues/640 - Regression: can't reuse a variable name in a {% for %} loop (created)
Authored
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https://github.com/django/django/pull/7806 - Fixed #27698 -- Added django.test.utils.ContextList.get()
Reviewed/committed
------------------
https://github.com/django/django/pull/7774 - Refs #27637 -- Fixed timesince, timeuntil on New Year's Eve in a leap year.
https://github.com/django/django/pull/7595 - Fixed #27522 -- Fixed runserver autoreload when using staticfile's options.
https://github.com/django/django/pull/4889 - Fixed #25004 -- Updated OpenLayers-based widget to OpenLayers 3
https://github.com/django/django/pull/7787 - Fixed #27681 -- Fixed binary &/| operators for negative values on MySQL.
https://github.com/django/django/pull/6660 - Fixed #26621 -- Corrected simplify_regex()'s handling of named capture groups.
https://github.com/django/django/pull/7770 - Fixed #25912 -- Added binary left/right shift operators to F expressions.
https://github.com/django/django/pull/7769 - Refs #15667 -- Removed trailing newline from widget attrs.html template.
https://github.com/django/django/pull/7767 - Fixed #27658 -- Prevented collectstatic from overwriting newer files in remote storages.
https://github.com/django/django/pull/7724 - Fixed #24423 -- Reorganized i18n tag tests.
https://github.com/django/django/pull/7522 - Fixed #27432 -- Made app_label arguments limit showmigrations --plan output.