shortcut to get the age of a repo

gitTag.byAge.go

@@ -29,3 +29,12 @@ func (a GitTagAge) Less(i, j int) bool {
 	return false
 }
 func (a GitTagAge) Swap(i, j int) { a[i], a[j] = a[j], a[i] }
+
+func (repo *Repo) NewestAge() time.Duration {
+	all := repo.Tags.SortByAge()
+	for all.Scan() {
+		r := all.Next()
+		return time.Since(r.GetAuthordate().AsTime())
+	}
+	return time.Since(time.Now())
+}