CHANGELOG.md in astrolabe-1.3.0 vs CHANGELOG.md in astrolabe-1.3.1

@@ -1,8 +1,12 @@
 # Changelog
 
 ## Development
 
+## v1.3.1
+
+* Stop allowing pre-release versions of Parser.
+
 ## v1.3.0
 
 * Add `Node#sibling_index`.
 
 ## v1.2.1