-`iid` filter has been removed from `projects/:id/issues`[!8967](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8967)
-`projects/:id/merge_requests?iid[]=x&iid[]=y` array filter has been renamed to `iids`[!8793](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8793)
- Endpoints under `projects/merge_request/:id` have been removed (use: `projects/merge_requests/:id`)[!8793](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8793)
- Project snippets do not return deprecated field `expires_at`[!8723](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8723)
- Endpoints under `projects/:id/keys` have been removed (use `projects/:id/deploy_keys`)[!8716](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8716)
### 9.0
- Status 409 returned for POST `project/:id/members` when a member already exists
- Moved `DELETE /projects/:id/star` to `POST /projects/:id/unstar`
- Removed the following deprecated Templates endpoints (these are still accessible with `/templates` prefix)
- Status 409 returned for POST `project/:id/members` when a member already exists[!9093](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/9093)
- Moved `DELETE /projects/:id/star` to `POST /projects/:id/unstar`[!9328](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/9328)
- Removed the following deprecated Templates endpoints (these are still accessible with `/templates` prefix)[!8853](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8853)
-`/licences`
-`/licences/:key`
-`/gitignores`
...
...
@@ -26,17 +26,17 @@ changes are in V4:
-`/gitignores/:key`
-`/gitlab_ci_ymls/:key`
-`/dockerfiles/:key`
- Moved `/projects/fork/:id` to `/projects/:id/fork`
- Moved `DELETE /todos` to `POST /todos/mark_as_done` and `DELETE /todos/:todo_id` to `POST /todos/:todo_id/mark_as_done`
- Endpoints `/projects/owned`, `/projects/visible`, `/projects/starred` & `/projects/all` are consolidated into `/projects` using query parameters
- Return pagination headers for all endpoints that return an array
- Removed `DELETE projects/:id/deploy_keys/:key_id/disable`. Use `DELETE projects/:id/deploy_keys/:key_id` instead
- Moved `PUT /users/:id/(block|unblock)` to `POST /users/:id/(block|unblock)`
- Make subscription API more RESTful. Use `post ":project_id/:subscribable_type/:subscribable_id/subscribe"` to subscribe and `post ":project_id/:subscribable_type/:subscribable_id/unsubscribe"` to unsubscribe from a resource.
- Labels filter on `projects/:id/issues` and `/issues` now matches only issues containing all labels (i.e.: Logical AND, not OR)
- Renamed param `branch_name` to `branch` on the following endpoints
- Moved `/projects/fork/:id` to `/projects/:id/fork`[!8940](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8940)
- Moved `DELETE /todos` to `POST /todos/mark_as_done` and `DELETE /todos/:todo_id` to `POST /todos/:todo_id/mark_as_done`[!9410](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/9410)
- Endpoints `/projects/owned`, `/projects/visible`, `/projects/starred` & `/projects/all` are consolidated into `/projects` using query parameters[!8962](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8962)
- Return pagination headers for all endpoints that return an array[!8606](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8606)
- Removed `DELETE projects/:id/deploy_keys/:key_id/disable`. Use `DELETE projects/:id/deploy_keys/:key_id` instead[!9366](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/9366)
- Moved `PUT /users/:id/(block|unblock)` to `POST /users/:id/(block|unblock)`[!9371](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/9371)
- Make subscription API more RESTful. Use `post ":project_id/:subscribable_type/:subscribable_id/subscribe"` to subscribe and `post ":project_id/:subscribable_type/:subscribable_id/unsubscribe"` to unsubscribe from a resource.[!9325](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/9325)
- Labels filter on `projects/:id/issues` and `/issues` now matches only issues containing all labels (i.e.: Logical AND, not OR)[!8849](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8849)
- Renamed param `branch_name` to `branch` on the following endpoints[!8936](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8936)
- POST `:id/repository/branches`
- POST `:id/repository/commits`
- POST/PUT/DELETE `:id/repository/files`
- Renamed `branch_name` to `branch` on DELETE `id/repository/branches/:branch` response
- Renamed `branch_name` to `branch` on DELETE `id/repository/branches/:branch` response[!8936](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8936)
- Remove `public` param from create and edit actions of projects [!8736](https://gitlab.com/gitlab-org/gitlab-ce/merge_requests/8736)
