Update CHANGELOG for v1.5.0 (#6431)

stevedomin · lexmag · commit 19d41f1fdbc0 · 2017-08-04T17:21:11.000+02:00
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -296,6 +296,7 @@ This release brings further improvements to Calendar types. It adds arithmetic a
 #### ExUnit
 
   * [ExUnit] Properly account failed tests when `setup_all` fails
+  * [ExUnit] Having two or more `describe` blocks with the same name will now raise an error.
 
 #### IEx
 
