Fixed #20722 -- Fixed MemcachedCache backend get_many on Python 3.
Made an aggregate test pass with spatialite backend

backends.tests.SqliteAggregationTests was failing with spatialite.
Simplified testing connection type
Added a test for the envelope() GeoQuerySet method

Refs #20718.
Avoided transaction.set_autocommit in tests.

It doesn't work as one might expect on a certain database backend where
autocommits_when_autocommit_is_off = True. That backend happens to be
popular for running tests.
Fixed #20724 -- Test failure on SQLite.

This test failure happened if the connection's NAME was set to a file
system path, and its TEST_NAME wasn't.

Thanks Claude for the report.
Fixed #20663 -- "Today" and "now" admin shortcuts.

Changed the shortcuts next to date and time intput widgets
to account for the current timezone.

Refs #7717, #14253 and #18768.
Added 1.7 release notes in TOC.
Fixed #19196 -- Added test/requirements
Added some missing test requirements in the docs; refs #19196
Fixed #20733 -- Typo in docs/ref/class-based-views/generic-display.txt

Thanks ijl20@ for the report.
Fixed #13721 -- Added UploadedFile.content_type_extra.

Thanks Waldemar Kornewald and mvschaik for work on the patch.
Fixed #20730 -- Fixed "Programmatically creating permissions" error.

Thanks glarrain for the report.
Fixed #17471 -- Added smtplib.SMTP_SSL connection option for SMTP backend

Thanks dj.facebook at gmail.com for the report and initial patch
and Areski Belaid and senko for improvements.
Fixed #20735 -- clarified ManyToManyField constructor doc
Merge pull request #1350 from chrismedrela/ticket20735

Fixed #20735 -- clarified ManyToManyField constructor doc
Fixed #17528 -- Documented that add() and remove() with a many-to-many relationship do not call Model.save()
Added clarification comments to django.utils.image; refs #19934
Merge pull request #1349 from chrismedrela/ticket19934-comment

Added clarification comments to django.utils.image; refs #19934
Fixed #19031 -- Added a warning when using override_settings with 'DATABASES'