Allow homogeneous siblings in Grid::attach_next_to
Allow homogeneous siblings in Grid::attach_next_to

rust-gnome/gtk,LordSentox/gtk,daa84/gtk,insanebits/gtk,EPashkin/rust-gnome-gtk,rust-gnome/gtk,EPashkin/rust-gnome-gtk,daa84/gtk,gkoz/gtk-rs-gtk,gkoz/gtk-rs-gtk,LordSentox/gtk,Susurrus/gtk,drewet/gtk,Susurrus/gtk,gkoz/rust-gnome-gtk,drewet/gtk,insanebits/gtk,gkoz/rust-gnome-gtk