V5.2.1

Option

• Icons - Added userChrome.icon.menu.full #412 #418
• Compatibility - Changed from default to option userChrome.compatiblity.os.windows_maximized #384 #414

Bug Fixes

• Icons - Bookmarks Toolbar #408
• Icons - Contents' context menu for about:downloads, chrome://browser/content/places/places.xhtml d6533fc
  • refactoring with src/contents
• Contents - Downloads's decoration a5d6ad9
• Contents - Addon.org devhub darkmode #365
  • Thanks for testing @filips123
• Contents - field border e3d5519

Others

• Dependency #410
• CI - Release before sync #409

Refactoring
Refactoring will continue to be applied progressive.

• src/icons: b101d74