* 🔧 Add pre-commit config
Similar to graphene and graphene-sqlalchemy
* ⬆ Bump black
* 👷 Lint on CI
* ⬆ Bump flake8-black
* 🔧 Keep excluding migrations
* ⬆ Bump flake8
* 🔧 Remove black and flake8 from tox config
* ⬆ Update pre-commit versions
* Upgrade syntax to python 3.7+
* Format with pre-commit
dedent docs/schema.py to allow formatting
* Fix tests on python 3.7
Introduces two changes to make sure the instructions in the tutorial don't require debugging:
- Add `cd ..` when first syncing the database so that `manage.py` is accessible in the working directory.
- Change `cookbook.ingredients.apps.IngredientsConfig.name` to `cookbook.ingredients` from `ingredients` to prevent the following exception:
```python
django.core.exceptions.ImproperlyConfigured: Cannot import 'ingredients'. Check that 'cookbook.ingredients.apps.IngredientsConfig.name' is correct.
```
If your run ``$ python ./manage.py loaddata ingredients`` without installing ``ingredients`` app in the project ``settings.py`` you will get the following error ``CommandError: No fixture named 'ingredients' found``. So make sure ``ingredients`` app has been put on the ``settings.py`` INSTALLED_APPS section before running ``$ python ./manage.py loaddata ingredients``.
