Log Message:
py-django-filter: updated to 2.0.0

Version 2.0:

2.0 introduced a number of small changes and tidy-ups.
Please see the migration guide:
https://django-filter.readthedocs.io/en/master/guide/migration.html#migrating-to-2-0

* Added testing for Python 3.7
* Improve exception message for invalid filter result
* Test QueryDict against CSV filters
* Add `renderer` argument to `render()` method of `BooleanWidget`
* Fix lookups for reverse relationships
* Refactor backend filterset instantiation
* Improve view-related attribute name consistency
* Fix distinct call for range filters
* Fix empty value check for CSV range
* Rework DateRangeFilter
* Added testing for Django 2.1
* Rework 'lookup types' handling into LookupChoiceFilter
* Add linting and docs builds to CI
* Use DRF BooleanFilter for NullBooleanField
* Added Brazilian locale
* List Django as a dependency in setup.py
* Keep coverage reports files off version control.
* Update migration docs
* Added be, cs and uk translations. Updated de and ru
* Slovak translation
* Added Django 2.0 support.
* Fix warnings build
* Add greek translation
* Replaced super(ClassName, self) with super()
* Fixed doc URL in utils.deprecate().
* Added danish translation to django-filter
* Rework validation, add queryset filter method
* Fix Schema warnings
* Update {Range,LookupType}Widgets to use suffixes
* Method signature improvements
* Remove more deprecations
* Drop python 2, Django<1.11 support
* Remove 'Meta.together' option
* [2.x] Remove some deprecations