CHANGELOG.md in mesh-medical-subject-headings-2.2.0 vs CHANGELOG.md in mesh-medical-subject-headings-2.2.1

@@ -1,4 +1,7 @@
+#2.2.1 / 2014-07-18
+* [FEATURE] Headings now have forward references
+
 #2.2.0 / 2014-07-10
 * [FEATURE] Headings now have structured_entries which include semantic and lexical information
 
 #2.1.0 / 2014-07-04
 * [FEATURE] Headings matched with Wikipedia, infobox images and abstracts imported