* Add gas categorization which includes commonly used climate forcing substances.
0.5.2
------------------
* Add IPCC2006_PRIMAP categorization. * Add refrigerant sub-classes and additional codes to CRFDI_class.
0.5.1
------------------
* Add BURDI, CRFDI, BURDI_class, and CRFDI_class categorizations and scripts to generate them from the UNFCCC DI flexible query API.
0.5.0
------------------
* Switch ``to_yaml()`` output to ruamel.yaml so that valid, correctly typed YAML 1.2 is written. This should enable easier re-use of the data in other contexts. * Consistently use title case for titles in IPCC categorizations.
0.4.0
------------------
* Add more unit tests. * Add consistency tests for IPCC categorizations. * Update documentation. * Add data format documentation.