v0.23.0 - storage: Refactor OriginVisitStatus instantiation - db: Unify sql joins on origin_visit_status using "USING" - storage.postgresql: Use origin_visit_status.type value as source - test_replay: Fix hang since confluent-kafka 1.6 release - postgresql: Fix dbversion() to return the max version instead of a random one. - buffer: ensure objects are flushed in topological order - Return an accurate summary from buffer's flush() method - buffer: add support for snapshots - buffer: add type annotations for tests