Bump django-extensions from 2.1.6 to 2.2.1

[dependabot-preview]

Bumps django-extensions from 2.1.6 to 2.2.1.

Changelog

Sourced from django-extensions's changelog.

2.2.1

Changes:

• Fix: tests, support for newer versions of pytest
• Fix: tests, disable test with drf dependency for older python versions

2.2.0

Changes:

• Fix: removing wrongly released text_tags template
• Fix: graph_models, support for Python <3.6
• Improvement: ForeignKeySearchInput, wrap media files in static()
• Improvement: UniqField, added tests
• Improvement: dumpscript, fix orm_item_locator to use dateutil
• Improvement: graph_models, added argument to change arrow_shape

2.1.9

Changes:

• Fix: show_urls, fix for traceback on multi language sites
• Improvement: reset_db, fix typo's in help test

2.1.8

Changes:

• New: HexValidator, validate hex strings
• Improvement: reset_db, move settings to django_settings.settings which makes it easier to override.
• Improvement: AutoSlugField, extend support for custom slugify function
• Fix: runprofileserver, fix autoreloader for newer Django versions

2.1.7

Changes:

• New: test, many many more tests :-) thanks everybody
• New: docs, many documentation updates
• New: graph_model, add simple theming support and django2018 theme
• Improvement: ModificationDateTimeField, make modificationfield name modifiable
• Improvement: graph_model, option to not showrelations labels in the graph
• Improvement: reset_db, allow to override list of backends for database engines
• Improvement: reset_db, add psqlextra backend
• Improvement: runserver_plus, idle support

... (truncated)

Commits

• b17a755 v2.2.1
• 96ab1d2 ignore older versions of python for drf test
• 677d54c fix for new versions of pytest
• 43d7c6f v2.2.0
• ecc3341 Merge pull request #1389 from Offpics/patch-2
• d98f4b1 Update graph_models.rst
• d6d0758 Merge pull request #1388 from Offpics/add_arrow_shape
• 80a174b Add choices to arrow_shape arg in graph_models
• 75f523f Fix support for python<3.6
• 1e96587 Add arrow_shape argument in graph_models
• Additional commits viewable in compare view

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[dependabot-preview]

Superseded by #183.