Licensing

[TheJJ]

We have to think about what license we will use for the data. Currently it is CC-BY-SA 4.0, but maybe we want something else, maybe even something like "and any later version of that license".

[TheJJ]

The "any later version" is defined by default: https://creativecommons.org/share-your-work/licensing-considerations/compatible-licenses/

We should explicitly mention it, though.