FormSet.forms is an iterable, so just iterate over it
Fixed #20591: added version in docs for utils.module_loading.import_by_path.
Merge pull request #1262 from batisteo/ticket-20591

Fixed #20591: added version in docs for utils.module_loading.import_by_path
Merge pull request #1259 from Wilfred/master

Simplified a formset example in the docs
Fixed #20579 -- Improved TransactionTestCase.available_apps.

Also moved its documentation to the 'advanced' section. It doesn't
belong to the 'overview'. Same for TransactionTestCase.reset_sequences.

When available_apps is set, after a TransactionTestCase, the database
is now totally empty. post_syncdb is fired at the beginning of the next
TransactionTestCase.

Refs #20483.
Warned that `request_finished` isn't sent by some buggy setups.

Older versions of uWSGI and Sentry's middleware do not adhere to
the WSGI spec and cause the `request_finished` signal to never
fire. Added notes to the appropriate places in the docs.

Fixed #20537.
Fixed order of base classes in CBV mixin docs
Merge pull request #1265 from dbrgn/mixin_order

Fixed order of base classes in CBV mixin docs
Fixed #20594 -- Add validation to models.SlugField.

Thanks carbonXT for the report.
Fixed #20000 -- Allowed ModelForm meta overrides for label, help_text and error_messages
Added release notes for auth views being reversed by name, not by path.

Refs #20532
Added a ``checksetup`` management command for verifying Django compatibility.
Remove incorrect CONTENT_TYPE header from GET and HEAD requests
Merge pull request #1270 from tomchristie/remove-incorrect-content-type-test-client

Remove incorrect CONTENT_TYPE header from GET and HEAD requests
Fixed #17076 -- When reversing a URL fails, inform the user which patterns were tried.
Fixed #15273 -- Extend RedirectView to allow reversal by name.

Thanks to @DrMeers for the report and @ludwigkraatz for the initial patch.
Fixed #20598 -- Add new HTTP status codes defined in rfc6585

428, 429, 431 and 511
Fixed #20528 -- regression in select_related join promotion

The join used by select_related was incorrectly INNER when the query
had an ORed filter for nullable join that was trimmed away. Fixed this
by forcing the join type to LOUTER even when a join was trimmed away
in ORed queries.
Fixed python 3.2 compat.
Added cache to available_apps in cache tests