Version 1.1

Added endpoint POST /wikibase/v1/entities/properties (T342992)
Added missing Content-Language header to DELETE /entities/items/{item_id}/sitelinks/{site_id} responses

Version 1.0

Wikibase REST API v1 released

Version 0.5

Added label/description endpoints with language fallback (T371605)
- GET /entities/items/{item_id}/labels_with_language_fallback/{language_code}
- GET /entities/items/{item_id}/descriptions_with_language_fallback/{language_code}
- GET /entities/properties/{property_id}/labels_with_language_fallback/{language_code}
- GET /entities/properties/{property_id}/descriptions_with_language_fallback/{language_code}
Added request-limit-reached error for when a client makes too many edit requests (T366594)
Added permission-denied error for unauthorized or prevented edits (T366581, T330914)
Added resource-too-large error for edits that make a resource larger than the configured limit (T330739)
Generalized several errors into a single patch-result-referenced-resource-not-found error (T366257)
Generalized several errors into a single referenced-resource-not-found error (T366247)
Generalized several errors into a single resource-not-found error (T366258)
Removed patched-duplicate-alias and duplicate-alias errors - duplicate aliases are now ignored (T366902)
Removed unexpected-field, patched-property-unexpected-field and patched-item-unexpected-field errors - unexpected fields are now ignored (T370623)
Generalized several errors into a single patch-result-modified-read-only-value error (T366255)
Generalized several errors into a single patch-result-invalid-value error (T370626)
Replaced kebab case keys with snake case in requests and responses (T368130)
Generalized several errors into a single data-policy-violation error (T366908)
Generalized several errors into a single patch-result-value-too-long error (T366252)
Generalized several errors into a single value-too-long error (T366238)
Generalized several errors into a single invalid-key error (T370781)
Generalized several errors into a single cannot-modify-read-only-value error (T366239)
Generalized several errors into a single invalid-value error (T366181)
Generalized several errors into a single missing-field error (T366177)
Modified the patch-target-not-found error (T366911)
- Changed message to Target not found on resource
- Changed context object - replaced operation and field fields with path
Modified the redirected-item error (T366910)
- Changed message to Item {item_id} has been redirected to {redirect_target_id}
- Added a context object with a redirect-target field
Modified the patch-test-failed error (T366905)
- Changed message to Test operation in the provided patch failed
- Changed context object - replaced operation field with path

Version 0.4

Added endpoint PATCH /wikibase/v0/entities/items/{item_id} (T342993)
Generalized several errors into a single invalid-path-parameter error (T366172)
Generalized several errors into a single invalid-query-parameter error (T366175)

Version 0.3

Added endpoint POST /entities/items (T342990)

Version 0.2

Added endpoint PATCH /entities/properties/{property_id} (T347394)

Version 0.1

The majority of endpoints were created during version 0.1