Binary package “libgtk3.0-cil” in ubuntu bionic

CLI binding for the GTK+ 3.0 toolkit

 This package provides the gtk-sharp assembly that allows CLI (.NET) programs
 to use the GTK+ 3.0 user interface toolkit.
 .
 GTK# 3.0 is a CLI (.NET) language binding for the GTK+ 3.0 toolkit and related
 libraries.