Merge pull request #1572 from DataDog/yann/cherry-pick-update-531

[skip ci] 5.3.1 release

Author: Yann

CHANGELOG.md

@@ -1,7 +1,7 @@
 Changes
 =======
 
-# 5.3.1 / 04-21-2015
+# 5.3.1 / 04-22-2015
 **Windows only**
 
 ### Details
@@ -1624,4 +1624,4 @@ If you use ganglia, you want this version.
 [@stefan-mees]: https://github.com/stefan-mees
 [@takus]: https://github.com/takus
 [@tomduckering]: https://github.com/tomduckering
-[@walkeran]: https://github.com/walkeran
+[@walkeran]: https://github.com/walkeran