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Updates
create_study(fixes #1110):aliasparameter is now optionalrun_idsis allowed to be an empty list orNone(it is possible to create an empty study and upload runs to attach to it later). Internally[]will be converted toNone, otherwise the server gets upset (see Make optional arguments tocreate_studyactually optional #1110 for more info).Note that previously empty studies were not allowed in
openml-python, but they now are. Previously empty studies were only allowed if they were created before2019-01-01, and they were expected to have theirrunsset toNoneso I reintroduced this convention for new studies without runs (though I think perhaps an empty list might be better).