switch to using xz compression of tarball
switch to using xz compression of tarball
bac/juju-gui,bac/juju-gui,CanonicalJS/juju-gui,CanonicalJS/juju-gui,mitechie/juju-gui,mitechie/juju-gui,bac/juju-gui,mitechie/juju-gui,jrwren/juju-gui,jrwren/juju-gui,jrwren/juju-gui,CanonicalJS/juju-gui,mitechie/juju-gui,bac/juju-gui,jrwren/juju-gui