Fixed #21114 -- Migrations must not have a dependency to themselves.
Destroy selenium before live server threads.

Ensure that selenium quits before the live server thread to
prevent occasional hangs when killing the live server.
Fixed #21115 -- Fixed NameError in migrate --list command
Fixed #21024 -- Documented how to deprecate a feature.
Fixed #12568 -- no error when accessing custom field's descriptor

The SubfieldBase's descriptor caused an AttributeError when accessed
from the class. Introspection didn't like that.

Patch by Trac alias supervacuo.
Fixed #15625 -- Made message in MultiValueDictKeyError less verbose.

Thanks margieroginski for the suggestion.
Fixed #4278 -- Added a dirs parameter to a few functions to override TEMPLATE_DIRS.

* django.template.loader.get_template()
* django.template.loader.select_template()
* django.shortcuts.render()
* django.shortcuts.render_to_response()

Thanks amcnabb for the suggestion.
Fixed #21118 -- Isolated a test that uses the database.

Thanks rmboggs for the report.
Fixed #21098 -- Applied sensitive_post_parameters to MultiValueDict

Thanks simonpercivall for the report and bmispelon for the review.
Fixed #21116 -- Made usage of manage.py in docs more consistent.

Thanks daniel.quattro at gmail.com for the report.
Fixed #19414 -- Added admin registration decorator

Thanks stavros for the suggestion.
Fix #21121: Add archive of security issues.
Merge pull request #1641 from ubernostrum/security-issues-docs-21121

Fix #21121: Add archive of security issues.
Fixed a typo in the docs
Fixed two typos in the docs
Corrected markup problems in new security summary page.
Reworked security issue list to be per-issue, not per-release.
Fixed typo in exception message; refs #19414

Thanks Alexey Boriskin for the report.
Added __pycache__ to gitignore
Fixed #7557 -- Added type checking to Variable initialization.

Thanks tobias for the suggestion and boblefrag and saz for work on the
patch.