Remove vendored versioneer

Remove vendored versioneer.py and load versioneer as a build dependency instead. Also, fixes parts of versioneer config that were forgotten when we migrated to PEP517.

added Bug infrastructure labels

requested review from @holzer

assigned to @da15siwa

added 1 commit

• 4e53ccde - Update __init__.py

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enabled an automatic merge when the pipeline for 4e53ccde succeeds

mentioned in commit 24a9f5af

merged