use 0.12 and 0.10 on travis
use 0.12 and 0.10 on travis

shinglyu/taskcluster-client,shinglyu/taskcluster-client,shinglyu/taskcluster-client,taskcluster/taskcluster-client,petemoore/taskcluster-client,petemoore/taskcluster-client,petemoore/taskcluster-client