* 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.
12.1.0
* Include the preview API into OpenFisca-Core * Remove internationalization (`i18n`, `Babel`) * Use CircleCI instead of Travis
12.0.3
* Fix variable `source_file_path` computation. - Make sure the tax and benefit system `location` metadata is consistent with the actual python files being loaded.
12.0.2
* Fix a bug introduced by 11.0.0: variables with several references could not be loaded.
12.0.1
* Fix a bug introduced by 12.0.0: the description of a parameter node was no longer exported in the parameter JSON.