Added

• Adds support for dark/light window title scheme.
• New frameless_window option (#2570) toggles the main window frame and title
  bar (if supported by the window manager):

  copyq toggleConfig frameless_window


• Adds support for localizing command names in the command INI files (#3032):

  [Command]
Name = ...
Name_cs = ...
Name_fr = ...
Name_pt_BR = ...
Name_pt = ...


• Adds support for showing preview for more image formats
  (namely ico and webp).
• Adds support for more complex network requests in scripts. New
  NetworkRequest class can be used to set custom headers, HTTP method, number
  of allowed redirects and timeout.

Changed

• Avoids hiding the main window on backspace
• Enables Vi/Emacs navigation (#3012) in menus, and Ctrl+[ in Vi and Ctrl+G
  in Emacs to work in many other places as Esc key (for example, to hide menus,
  dialogs). Users can override shortcuts, but not some reserved ones in
  specific cases (mainly, if the item list or a menu has focus).
• Selections and current items/rows/data in scripts now only relate to the
  tab selected with tab(...) in scripts (this is still by default the
  selected tab when the command started). Affected script functions:
  • move()
  • setData()
  • removeData()
  • selectedItems()
  • selectedItemData()
  • setSelectedItemData()
  • setSelectedItemsData()
  • currentItem()
  • ItemSelection().current()
• Drops unnecessary timeouts when executing commands and actions from scripts.
• Avoids fetching and passing clipboard to action()/execute() if the
  commands do not contains %1 placeholder. This can improve performance.