yaml-edit 0.2.1

+STR
+DOC
+MAP
=VAL :american
+SEQ
=VAL :Boston Red Sox
=VAL :Detroit Tigers
=VAL :New York Yankees
-SEQ
=VAL :national
+SEQ
=VAL :New York Mets
=VAL :Chicago Cubs
=VAL :Atlanta Braves
-SEQ
-MAP
-DOC
-STR