what do do with special areas? #45
Description
As it turns out, our mapping tables include the only land-area which is not part of a municipality ("Staatswald Galm", BFSNr: 2391) and five "Kommunanzen", which belong to more than one municipality. Two of the latter still exist.
I don't think that's necessarily wrong, it's just something to be aware of.
Possibly we should mention it in the documentation.
E.g. in the downloaded BFS data (load_bfs_mun_list()) these areas do not appear among the municipalities.
More details in https://github.com/cynkra/munch/blob/f-31-tests/tests/testthat/test-external-consistency.R