- Removed deprecated slots: appraisal_notes, branch_id, is_or_was_real.
- Introduced new slots: has_or_had_notes, has_or_had_provenance.
- Created Notes class to encapsulate note-related metadata.
- Archived removed slots and classes in accordance with the new archive folder convention.
- Updated slot_fixes.yaml to reflect migration status and details.
- Enhanced documentation for new slots and classes, ensuring compliance with ontology alignment.
- Added new slots for note content, date, and type to support the Notes class.
