* Technical changes
- Migrate CI from Travis to CircleCI
- Reset `master` branch as default branch instead of `release/1.0.0`
- Contains [161](https://github.com/openfisca/openfisca-france-data/pull/161), [#171](https://github.com/openfisca/openfisca-france-data/pull/171), [#172](https://github.com/openfisca/openfisca-france-data/pull/172), [#173](https://github.com/openfisca/openfisca-france-data/pull/173), [#179](https://github.com/openfisca/openfisca-france-data/pull/179), [#183](https://github.com/openfisca/openfisca-france-data/pull/183), [#186](https://github.com/openfisca/openfisca-france-data/pull/186)