Update django-import-export to 2.0

[pyup-bot]

This PR updates django-import-export from 1.2.0 to 2.0.

Changelog

2.0

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

- [django2.2] Add real support of Django 2.2 before 3.0 is out (1021)

- fix: DateTimeWidget not timezone sensitive (813) (943)

- Move actions definition to ExportActionMixin (992)

- Add language support: Turkish (1013)

- Fix exception import for Django 3 (1010)

- Fix potential header / row column mismatches for invalid rows in… (995)

- Assume user is importing new data if id fields not included (996)

- Fix bug with spaces in export filename, pass request and queryset (980)

- Simplify Django version in TravisCI (970)

- Merge pull request 966 from andrewgy8/bump-stale-bot-time

- Align error in rtl mode (954)

- Add dutch translations (951, 1024)

- Add 3.8-dev to travis ci (926)

- Fix style in getting_started docs (952)

- Update documentation to show that mixins must be referenced before admin.ModelAdmin. (946)

- JSONWidget updated with null value fix (928)

- Import rows have background color (929)

- Use resource get_queryset in ModelInstanceLoader (920)

- Simplify coerce to text type (887)

- More flexibility in ConfirmImportForm, forms and resource kwargs  (893)

- Add JSON B type field mapping (904)

- Scale back stale bot's time-to-stale (918)

- test: explicitly order qs in ManyToManyWidget

- Add mysql to travis

- Expand doc strings to include Mixin superclasses (914)

- Remove python2 compatibility decorator

- chore: fix Imports are incorrectly sorted.

- Use global env vars for postgres

- Used non-fixed id for test. Database is not torn down after each run, which means that the id is incrementing

- Fix warning from assertEquals

- Add psycopg2 as postgres driver to test requirements

- Add django version to the matrix

- Add matrix for sqlite and postgres testing

- Correct mistaken assertTrue() -> assertEquals()

- chore: add package long_description

- chore: add python wheels to dev requirements (890)

- Add github directory with PR and issue templates

- Isort all the things

- Use coveralls master branch tag in the readme

- Remove support for Django < 2.0 and Python < 3.5

Links

• PyPI: https://pypi.org/project/django-import-export
• Changelog: https://pyup.io/changelogs/django-import-export/
• Repo: https://github.com/django-import-export/django-import-export