menu_block 8.x-1.6

Changes since 8.x-1.5:

• #3129882 by Suresh Prabhu Parkala: Fix PHPCS error
• #2968049 by joelpittet, nkoporec, vdenis, alexpott, Berdir, gapple, dww, Aston Victor, andypost, Wim Leers, idebr: Dependency Injection issue
• #3115436 by dww, jungle, mattbloomfield, Kristen Pol: Use proper dependency injection and protect menu_block from changes to the SystemMenuBlock constructor
• #3042653 by matsbla, jenlampton: Drupal 9 Deprecated Code Report
• #3118828 by dww: MenuBlockTest should define defaultTheme
• #3038396 by JeroenT, dww: Add automated tests
• #3086171 by dww: Add @file doc block to menu_block.module
• #3022011 by JeroenT, idebr: Implement config schema for block.settings.menu_block.*.{follow, follow_parent}
• #2756675 by Gertjan.k, pookmish, Tom.Camp, Eyal Shalev, nod_, rutiolma, adammalone, johnny5th, byrond, drclaw, manuel.adan, stefan.r, polynya, sherakama, rmccreary, mithenks: Add option to make the starting level follow the active menu item
• #2981885 by jeroendegloire, justcaldwell: No 'Edit Menu' functionality in Settings Tray
• #2983880 by chipway: Apply new {project}:{module} format for dependencies in info.yml
• #2932048 by RajeevK, pingers, harsha012, Prashant.c, Maheshwaran.j, joelpittet, Dinesh18: Config schema mismatch for expand(ed)