Felix Yan promotes the xmonad stack to extra, moor lands at 2.19.2
- move xmonad-contrib from extra-staging-x86_64 to extra-x86_64 archlinux/state
- move xmonad-dbus from extra-staging-x86_64 to extra-x86_64 archlinux/state
- move xmonad-extras from extra-staging-x86_64 to extra-x86_64 archlinux/state
- move xmonad-utils from extra-staging-x86_64 to extra-x86_64 archlinux/state