- provide tests over the conversion of
CodebaseRelease->ReleaseContributors to CodeMeta author
- provide tests for codebase keywords and contributors
- adjust CodebaseRelease.add_contributor to set the index as well
- provide tests for citations and change structure of languages test

TODO: add management command to synchronize Contributor metadata
with User metadata that got munged by the randomizer
comses/planning#209

Co-authored-by: Charles Sheelam <[email protected]>

using both property testing and stateful testing

https://hypothesis.readthedocs.io/en/latest/django.html

https://hypothesis.readthedocs.io/en/latest/stateful.html

refactor add_contributor takes a Contributor for consistency instead of
User