Add a license

[bellerophons-pegasus]

I think a license should be included for the taxonomy. I would suggest to use CC-BY (https://f.hypotheses.org/wp-content/blogs.dir/5978/files/2019/02/Letak-ELDAH_24_11_2.pdf) or be bold and go for Public Domain.

[arockenberger]

I second that!

[christofs]

True, thanks for pointing out the oversight. We'll talk about it in the team, but CC BY sounds good, even more open would be fine with me as well.

[arockenberger]

That would be awesome! I'm using the taxonomy here at Uni Oslo Library (and I already made some visualizations) and I would like to officially put them somewhere. We are also working on a translation (into Norwegian).