Add release date

oschwald · oschwald · commit 8052ab8b8b3d · 2020-04-06T10:17:00.000-07:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,7 +1,7 @@
 CHANGELOG
 =========
 
-1.13.0
+1.13.0 (2020-04-06)
 -------------------
 
 * Added support for the new credit card output `/credit_card/is_business`.
