- Consolidated valid_from and valid_to slots into a single temporal_extent slot in FundingRequirement, GiftShop, OrganizationBranch, OrganizationalChangeEvent, OrganizationalStructure, SocialMediaProfile, Storage, StorageUnit classes.
- Updated slot definitions to use TimeSpan for temporal_extent, providing structured validity periods.
- Removed deprecated slots: valid_from, valid_to, verified_by, wikidata_entity_id, and worldcat_id, archiving their definitions for reference.
- Adjusted related documentation and examples to reflect the new temporal_extent structure.