Thanks Marc Aymerich for the report and the initial patch.

Thanks @carljm for the review.

Thanks nebstrebor for the report and antofik for the patch.

Thanks rshea for the draft text.

Thanks Russ for the suggestion.

Fixes #20162 -- Added a note in the documentation for `static.serve()` about the need for updating the system's map files when incorrect content types are returned. Many thanks to Simon Charette and Claude Paroz for their feedback.

The test suite doesn't seem to suffer from this removal. Tests
should probably take care themselves to clear caches if they
depend on it.

Updated bios of committers

if obj it None, it's None, there's no need to check it

Thanks Jan Murre, Reinout van Rees and Wim Feijen,
plus Remco Wendt for reviewing.

Thanks James Pic.

Thanks Russ and Susan Tan.

Fixed #20150 -- Fixed an error in manager doc example

Before this change, if you had a global Django installation in /usr/local/, you
might get a spurious warning when installing Django within a virtualenv.

Thanks epicserve for the report and debugging help.

Ref #19689.

Thanks to sane4ka.sh at gmail for the report!

Thanks rosarior for the report and the file proposal.

Fix #20158: invalid code in queryset_pickle test models.

Thanks Stefan Berder.

Removed ambiguity regarding LANGUAGES setting

Queries can contain binary data undecodable with utf-8. In this
case, using the 'replace' errors mode when decoding seems like
an acceptable representation of the query.
Thanks Marcel Ryser for the report.

Fixed spelling errors

Fixed spelling of "consistent" in admin/options.py