* Serve the [OpenAPI specification](https://www.openapis.org/) under the API route `/spec/`
12.2.0
* Use `nose` in the `openfisca-run-test` script - This avoids boilerplate code on country packages, and makes parallelism easier to set on Circle CI.
12.1.4
* Fix package naming conflict between the preview API and the official one. * Fix import error
12.1.3
* Validate XML parameters with lxml and a XML Schema * Raise nicer errors during validation
12.1.2
* Improve the error when the period argument is forgotten in entity call
12.1.1
* When replacing a variable by another one in a reform, assume the new variable has the same metadata than the reference one. - The is currently the behaviour for all other metadata.