This includes:
- Commits::add should return this
- Add Settings.migrationHistorySchema
- Add some DEBUG logging
- Add a jOOQ-migrations-maven module draft
- Cache AbstractNode.root to avoid excessive recursive root() lookups
- [jOOQ/jOOQ#15201] Rename changelog to history
- [jOOQ/jOOQ#15201] Removal of Commits.commit(String)
