v4.8.0

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