s/Gboolean/gboolean/ for consistency with C headers
s/Gboolean/gboolean/ for consistency with C headers

gkoz/gtk-rs-gdk,rust-gnome/gdk,gkoz/rust-gnome-gdk,gkoz/gtk-rs-gdk,gkoz/rust-gnome-gdk,hmeyer/gdk,hmeyer/gdk,rust-gnome/gdk