The [ReadTheDocs configuration file](https://github.com/Matific/broken-down-models/blob/version-0.3.1/.readthedocs.yml) [requires updating](https://blog.readthedocs.com/use-build-os-config/). But it seems like the file we use doesn't quite fit the [current documentation](https://docs.readthedocs.io/en/stable/config-file/v2.html) in general.