General improvements

• Simplified pagination using Enumerator::Lazy #568
• Updated documentation for create_merge_request and accept_merge_request #573

Bugfixes

• Fixed support for nested arrays on ObjectifiedHash #570

New features

• Added support for user snippets API #563
• Added support for merge_request_approval_state #565
• Added support for passing options to merge_request #569

Bugfixes

• Fixed updating project and merge request approvers #489 #493

New features

• Added support for container registry API #485
• Added support for markdown API #486
• Added support for .gitlab-ci.yml lint API #487
• Added support for registering, deleting and verifying runners #488
• Added support for passing options to runner_jobs #492

New features

• Added support for group issues #465
• Added support for group labels #477
• Added support for group boards #478
• Added support for merge request participants #480
• Added support for issue boards #481
• Added support for search APIs #482
• Added support for avatar API #483

General improvements

• Updated gemspec

Bugfixes

• Fixed editing allowed approvers for a merge request #454
• Fixed handling 429 (Too Many Requests) responses from an API server #462

New features

• Added support for resource label events #459
• Added support for deleting a pipeline #460
• Added support for features flags #461
• Added support for project clusters API #463
• Added support for project releases and release links APIs #466

General improvements

• Added Ruby 2.6 support

New features

• Added support for deleting project milestones #438
• Added support for deleting merged branches #439
• Added support for listing protected branches #440
• Added support for broadcast messages API #441
• Added support for wikis API #442
• Added support for templates API #444
• Added support for repository submodules API #449
• Added support for protected tags API #451
• Added support for project badges API #452

Bugfixes

• Fixed handling spam error message #430

New features

• Added support for merge request pipelines #421
• Added support for the cherry pick API #424
• Added support for projects transfer #425
• Added support for listing all the merge requests that will close issue when merged #426
• Added support for the participants on issues API #427
• Added support for passing variables when creating a pipeline #428

Bugfixes

• Fixed client modules namespacing #419

General improvements

• Dropped Ruby 2.2 support
• Updated code style to comply with a community-driven Ruby coding style guide

Bugfixes

• Fixed handling interrupt signal on CLI
• Fixed passing hex color via CLI #414
• Fixed project events path #418

New features

• Added support for Diff versions API #403
• Added support for Merge Base API #405
• Added support for file uploads #412
• Added support for SSH keys for different users #413
• Added support for Version API #415

General improvements

• Reduced gem size 4 times #390

Bugfixes

• Fixed an error message handling from the API response #389
• Fixed options for projects API #399

New features

• Added support for Merge Request approvals API #393
• Added support for project unsharing #395
• Added support to pass options for deploy keys #398

Version 4.2.0

See the CHANGELOG.md for what's new in this release.