- Introduced the ImageTilingServiceEndpoint class for tiled high-resolution image delivery, including deep-zoom and transformation capabilities, with multilingual descriptions and structured aliases.
- Archived the ID class as a backwards-compatible alias for Identifier, marking it as deprecated to enforce the use of the canonical Identifier model.
- Removed obsolete slots: `has_or_had_custodian_observation`, `provider`, and `specificity_annotation`.
- Updated `has_or_had_score` slot to use `SpecificityScore` class and modified its description and examples.
- Added new slots: `end_seconds`, `end_time`, `has_archive_path`, `has_or_had_custodian_name`, `protocol_name`, and `protocol_version`.
- Introduced a script `check_annotation_types.py` to validate the presence and structure of `custodian_types` in YAML files.
- Added a script `update_specificity.py` to automate updates related to `SpecificityAnnotation` to `SpecificityScore`.
- Added new slot `is_or_was_used_in` to `DataServiceEndpointType` for tracking usage in the heritage sector.
- Replaced `heritage_society_subtype` with `has_or_had_hyponym` in `HeritageSocietyType`.
- Updated `HistoricBuilding` to use `has_or_had_status` instead of `heritage_status`, linking to the new `HeritageStatus` class.
- Removed deprecated slots: `heritage_relevant_count`, `heritage_relevant_percentage`, `heritage_sector_usage`, `heritage_society_subtype`, and `heritage_status`.
- Introduced new classes `Connection`, `HeritageSector`, and `HeritageStatus` to better structure heritage-related data.
- Migrated relevant descriptions and annotations to align with new schema standards.
- Updated slot definitions to improve clarity and consistency across the schema.
