`=` in dependencies is too restrictive
`=` in dependencies is too restrictive

with `~` all versions up to but not including `0.4.0` are okay.
Susurrus/gtk,Susurrus/gtk,daa84/gtk,daa84/gtk,rust-gnome/gtk,gkoz/rust-gnome-gtk,EPashkin/rust-gnome-gtk,gkoz/rust-gnome-gtk,gkoz/gtk-rs-gtk,rust-gnome/gtk,gkoz/gtk-rs-gtk,EPashkin/rust-gnome-gtk