Bug#836224: gnome-shell-extension-taskbar: Please set dependency relationship for gnome-shell versions

[Jeremy Bicha]

Package: gnome-shell-extension-taskbar
Version: 52.0-2

gnome-shell-extension-taskbar should depend on specific gnome-shell
versions. Something like

         gnome-shell (>= 3.10),
         gnome-shell (<< 3.23),

Also, since gnome-shell 3.22 will be released soon (and 3.21.90 is
already in unstable), I recommend including 3.22 in the extension's
metadata.json.

Thanks,
Jeremy Bicha