CHANGELOG.markdown in active_zuora-2.1.2 vs CHANGELOG.markdown in active_zuora-2.1.3

@@ -1,4 +1,5 @@
+#### v2.1.3
 #### v2.1.2
 #### v2.1.1
 #### v2.1.0
 * Upgrade Savon to 1.2 https://github.com/sportngin/active_zuora/pull/22
   - By @nvd