- [x] Correct references and citations - [x] Mappings documentation - [ ] Docstring documentation (c.f. code [TODOs](https://github.com/search?q=repo%3Aint-brain-lab%2Fiblatlas%20TODO&type=code) and [FIXMEs](https://github.com/search?q=repo%3Aint-brain-lab%2Fiblatlas%20FIXME&type=code)) - [ ] Fixture file documentation (see [this](https://github.com/int-brain-lab/iblatlas/blob/8938ba1e68c5302f233ac6a3514937825ceb4393/iblatlas/__init__.py#L151-L163), [this](https://github.com/int-brain-lab/iblatlas/blob/8938ba1e68c5302f233ac6a3514937825ceb4393/iblatlas/__init__.py#L123-L127) and [this](https://github.com/int-brain-lab/iblatlas/blob/8938ba1e68c5302f233ac6a3514937825ceb4393/iblatlas/regions.py#L27)) https://github.com/int-brain-lab/ibllib/pull/633
