v0.10.0
* 2021-01-12 Add an optional type field on OriginVisitStatus object
* 2021-01-12 test_identifiers: Reorder SWHID tests.
* 2021-01-12 test_identifiers: Make sure that {directory,revision,release,snapshot}_identifier() doesn't just return a value from the dict.
* 2021-01-04 Add missing slots=True for Directory.
* 2020-12-19 SWHID parsing: simplify and deduplicate validation logic
* 2020-12-14 model: Make all classes slotted.