New Icons:
- View icons for columns, grids, lists, and reader mode. Plus horizontal and vertical ellipsis icons
- Start and End show/hide sidebar icons
- Emoji category icons used by GTK's emoji picker
- Eye icons required by Gtk.PasswordEntry
New Features:
- Box is an orientable widget that includes standardized spacing and linked styles
- ListItem is a standard list widget that includes styles and spacing
- ToolBox is a vertical layout widget for top and bottom toolbars
- new style class constants for labels: CssClass.NUMERIC and CssClass.MONOSPACE
- StyleManager handles automatically setting dark and light modes as well as system accent colors using Portals
- BackButton is a standardized navigation button that activates "navigation.pop" and includes a shortcut tooltip
Improvements:
- accel_to_string now uses the word "Super" instead of the "⌘" symbol
- HeaderLabel has a new property for H1-H4 sizes and H2 styles are now bolder
- CssClass.CARD is now rounded by default
- Updated translations
Deprecations:
- Utils.set_color_primary. Modern apps have moved to more of a split paned design and this style is no longer very fashionable
- Nearly all of the old `STYLE_CLASS` constants have been deprecated. Some of them have been replaced by `CssClass` constants, others by widgets.
Demo Improvements:
- More demo pages with more widgets
- Color scheme switcher in the sidebar