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Version Updates

Merging this PR will release new versions of the following packages based on your change files.

muda

[0.21.0]

• 544eb78 (feat!: remove libxdo and use GTK APIs for Copy/Cut/Paste #416 by @amrbashir) Support the predefined Undo and Redo menu items on the GTK 3 and GTK 4 backends. On GTK 4 they act on the application's focused widget; on GTK 3 they only act on a focused WebKitWebView, which is the only widget there with an undo stack.
• 544eb78 (feat!: remove libxdo and use GTK APIs for Copy/Cut/Paste #416 by @amrbashir) Support the predefined Copy, Cut, Paste and SelectAll menu items on the GTK 4 backend.
• ff4344f (feat(macos): add MenuItem::set_attributed_title for custom NSAttributedString labels #399 by @MattJackson) On macOS, Add set_attributed_title to MenuItem, CheckMenuItem, IconMenuItem, and Submenu to set a fully custom NSAttributedString. Passing None clears it and falls back to the plain text.
• 8ef14fd (feat(macos): add IconMenuItem/Submenu::set_icon_as_template #413 by @minodisk) Add IconMenuItem/Submenu::set_icon_templated and IconMenuItem/Submenu::icon_is_template on macOS, to opt an
  item's icon into being drawn as a template image, so the system recolours it to match
  the menu the way the built-in items are.
• 9c46bc8 (feat: expose NativeIcon platform mappings #419 by @amrbashir) Add NativeIcon::appkit_name on macOS, and NativeIcon::stock_icon_id and NativeIcon::to_hicon on Windows, exposing the platform mappings already used for menu item icons.
• 544eb78 (feat!: remove libxdo and use GTK APIs for Copy/Cut/Paste #416 by @amrbashir) Breaking change Remove the libxdo Cargo feature and the dependency on libxdo. The predefined Copy, Cut, Paste and SelectAll items now act on the application's focused widget with GTK itself.
• 3324171 (feat!: remove TextStyle in favour of macOS set_attributed_title #422 by @amrbashir) Breaking change Remove the TextStyle enum, MenuItem/IconMenuItem/CheckMenuItem/Submenu::set_styled_text and MenuItemBuilder/IconMenuItemBuilder/CheckMenuItemBuilder/SubmenuBuilder::styled_text. Use set_attributed_title on macOS to style a label; the styled parts rendered as plain text on the other platforms anyway.
• 4f4b276 (feat: run predefined menu items from a menu snapshot #418 by @amrbashir) Add PredefinedMenuItemSnapshot::activate, which runs the item's predefined action from a menu snapshot: the about dialog, the edit commands, and on GTK 4 the window items. The ones that act on a window use the application's active one, as a snapshot has no menu of this process to take it from.