First commit

pkg/obitax/ranklist.go

@@ -0,0 +1,16 @@
+package obitax
+
+func (taxonomy *Taxonomy) RankList() []string {
+	ranks := make([]string, 0, 30)
+	mranks := make(map[string]bool)
+
+	for _, t := range *taxonomy.nodes {
+		mranks[t.rank] = true
+	}
+
+	for r := range mranks {
+		ranks = append(ranks, r)
+	}
+
+	return ranks
+}