label_sync/main.go
func change(repo string, label Label) Update {
	logrus.WithField("repo", repo).WithField("label", label.Name).WithField("color", label.Color).Info("change")
	return Update{Why: "change", Current: &label, Wanted: &label, repo: repo}
}
func change(repo string, label Label) Update {
	logrus.WithField("repo", repo).WithField("label", label.Name).WithField("color", label.Color).Info("change")
	return Update{Why: "change", Current: &label, Wanted: &label, repo: repo}
}
// Update the label color/description