Pin django-choices to latest version 2.0.0

[pyup-bot]

This PR pins django-choices to the latest release 2.0.0.

Changelog

2.0.0

------------------

This will (likely) be the final release, ever. Django has been shipping native choices
support since version 3.0, so we are sunsetting this library. Many thanks to every
contributor in any matter - documentation, issues, ideas, patches... You have all
made valuable contribution.

That said, this final (hopefully) release aims to assist in taking those last hurdles.
We've provide some tooling to help you migrate (see the "migrating" documentation) and
updated the project to work on supported Django and Python versions.

Breaking changes
----------------

* Drop support for Django 1.11, 2.2, 3.0, 3.1 (EOL)
* Drop support for Python 2.7, 3.5, 3.6, 3.7 (EOL)

Older Django versions and Python 3.6+ likely still work, but they are not tested in CI
anymore.

Other changes
-------------

* Confirm support for Django 4.1 & 4.2
* Confirm support for Python 3.10 and 3.11
* Added a management command to generate equivalent native django choice definitions
* Documented how to migrate to native choices
* Documented the (approximately) equivalent usage of Django Choices/native choices.

1.7.2

------------------

CI maintenance release. There are no actual Python code changes in this release.

* Added explicit support for Django 3.1 and 3.2
* Added explicit support for Python 3.8 and 3.9
* Migrated from Travis CI to Github Actions
* Added Black as code formatter
* Dropped Python 3.4 support since it's not available on Github Actions.

1.7.1

------------------

* Added support for Django 3.0
* Added dependency on non-vendored six

1.7.0

------------------

* Added ``DjangoChoices.get_order_expression`` class method
* Added support for Python 3.7 and Django 2.2
* Dropped support for Django 1.8, Django 1.9 and Django 1.10

1.6.2

------------------

* documentation code blocks are now syntax highlighted (bashu in 55)
* ``DjangoChoices`` subclasses are now directly iterable (yielding the choice
tuples) (brianjbuck in 53)
* documentation of ``DjangoChoices.labels`` is fixed (54)
* typo fixed in docs (nielznl in 57)

1.6.0

-----

* Added support for custom attributes to ``ChoiceItem``.
* Added ``DjangoChoices.get_choice`` as public API to retrieve a ``ChoiceItem``
instance.

See the docs for example usage.

1.5.1

-----

* Fixed inability to set custom order to 0 (50), thanks to kavdev for the
patch and robinramael for the report
* Added API to get the attribute name from a value (48), thanks to jaseemabid
for the report

1.5.0

-----

* Dropped support for old Python/Django versions.
* Added support for ``NullBooleanField`` -- thanks to ashwch
* Added retention of choices order in ``DjangoChoices.values`` -- thanks to merwok

..  warning::
 Dropped support for Python versions < 2.7 and 3.3, and Django < 1.8. If you
 need explicit support for these versions, you should stick to version 1.4.4.

1.4.4

-----

* Bugfix for better IPython support (125d523e1c94e4edb344e3bb3ea1eab6f7d073ed)

1.4.3

-----

Fixed a bug in the validator error message output - thanks to Sobolev Nikita

1.4

------------
This is a small release that fixes some ugliness. In Django 1.7 and up, the
validator can now be used as documented in the readme. Before this version, the
error::

 ValueError: Cannot serialize: <bound method DjangoChoicesMeta.validator of <class 'choices.models.MyModel.Choices'>>

would be raised, and a workaround was to define a validator function calling the
choices' validator, requiring everything to be defined in the module scope.

This is now fixed by moving to a class based validator which is deconstructible.

1.3

----------
* Added support for upcoming Django 1.9, by preferring stlib SortedDict over
Django's OrderedDict
* Added pypy to the build matrix
* Added coverage to the Travis set-up

Links

• PyPI: https://pypi.org/project/django-choices
• Changelog: https://data.safetycli.com/changelogs/django-choices/
• Repo: https://github.com/bigjason/django-choices