Add CITATION.cff

[simleo]

Adds CITATION.cff to the repo. This is now supported by GitHub.

All should review this, especially to check if I got the ORCIDs right.

At some point we should review and single-source all this information. This file looks like the best source for authors, since it contains more information and it's structured; OTOH, the release date should probably be generated upon tagging.

[stain]

+1 Checked all ORCIDs match listing on https://www.researchobject.org/ro-crate/community.html except @albangaignard which anyway match http://albangaignard.github.io/about/

The DOI is the 0.4.0 release, meaning we would have to update it on each release - and it would be off-by-one within each release as the DOI is made automatically afterwards. Should we change to the version-less DOI https://doi.org/10.5281/zenodo.3956493 so we don't have to change it? Or as we have to update version anyway before a release, just bite the bullet that the DOI will be wrong at tagging time?

I note that for instance cff-converter-python uses the version-less DOI.

BTW - is the CITATION.cff accessible from pip? We could add it somehow in setup.py so that this is accessible also outside github?

[simleo]

The DOI is the 0.4.0 release, meaning we would have to update it on each release - and it would be off-by-one within each release as the DOI is made automatically afterwards. Should we change to the version-less DOI https://doi.org/10.5281/zenodo.3956493 so we don't have to change it? Or as we have to update version anyway before a release, just bite the bullet that the DOI will be wrong at tagging time?

Changed to the versionless DOI. Seems more appropriate for something that's supported by a repository widget, since it reflects the ongoing development version. For instance, we still had to add @ilveroluca to the authors and now I added him in 84cd65c, however he wasn't an author as of release 0.4.0.

BTW - is the CITATION.cff accessible from pip? We could add it somehow in setup.py so that this is accessible also outside github?

Added CITATION.cff, and LICENSE which was missing, to MANIFEST.in.