Openfisca-extension-template

- Technical change
- Details:
- Add tar.gz to PyPi to be used by conda to build conda package.

- Technical change
- Details:
- Migrate from deprecated Dependabot.com to GitHub-native Dependabot service
- Allows to track the dependencies updates according to new
`.github/dependabot.yml` configuration file

- Minor change.
- Details:
- Add support for `flake8-bugbear` \< 22

- Minor change.
- Details:
- Add support for `flake8-print` \< 5

- Technical improvement.
- Details:
- Forces the installation of the new build each time `make build` is run
- CircleCI tests against the packaged version of this library
- When a branch is pushed first time, CircleCI creates a build and caches
dependencies
- Subsequent pushes do not reinstall the build as it is already in cache
- If the code has been modified in between, changes will be ignored, and
tests will fail

- Technical improvement.
- Impacted areas: `**/*`
- Details:
- Make style checks stricter and clearer to help country package developers
get started