widgetpath: Use CSS-like syntax in to_string()
widgetpath: Use CSS-like syntax in to_string()

Print pseudo-classes using ':' sign.

jadahl/gtk,jessevdk/gtk,jessevdk/gtk,alexlarsson/gtk,Adamovskiy/gtk,alexlarsson/gtk,Adamovskiy/gtk,chergert/gtk,alexlarsson/gtk,jadahl/gtk,chergert/gtk,jessevdk/gtk,grubersjoe/adwaita,alexlarsson/gtk,ahodesuka/gtk,grubersjoe/adwaita,Adamovskiy/gtk,Lyude/gtk-,Lyude/gtk-,jigpu/gtk,jigpu/gtk,ahodesuka/gtk,jadahl/gtk,ahodesuka/gtk,ahodesuka/gtk,jessevdk/gtk,jigpu/gtk,chergert/gtk,davidgumberg/gtk,chergert/gtk,davidgumberg/gtk,davidgumberg/gtk,chergert/gtk,Lyude/gtk-,davidgumberg/gtk,alexlarsson/gtk,chergert/gtk,grubersjoe/adwaita,ahodesuka/gtk,davidgumberg/gtk,jadahl/gtk,Lyude/gtk-,grubersjoe/adwaita,Lyude/gtk-,jigpu/gtk,davidgumberg/gtk,chergert/gtk,jadahl/gtk,Adamovskiy/gtk,grubersjoe/adwaita,jadahl/gtk,chergert/gtk,davidgumberg/gtk,alexlarsson/gtk,ahodesuka/gtk,jigpu/gtk,alexlarsson/gtk,davidgumberg/gtk,grubersjoe/adwaita,jigpu/gtk,ahodesuka/gtk,jigpu/gtk,jessevdk/gtk,grubersjoe/adwaita,jadahl/gtk,Lyude/gtk-,Adamovskiy/gtk,Lyude/gtk-,jessevdk/gtk,ahodesuka/gtk,jigpu/gtk,Adamovskiy/gtk,jessevdk/gtk,Adamovskiy/gtk,jadahl/gtk,grubersjoe/adwaita,Lyude/gtk-,Adamovskiy/gtk,alexlarsson/gtk