Backend upgrade

nicolasstucki · nicolasstucki · commit 63e4d62f01c0 · 2017-11-24T16:24:39.000+01:00
diff --git a/scala-backend b/scala-backend
@@ -1 +1 @@
-Subproject commit 31f96813dc8282a685728ae5769f7c1004d89e3a
+Subproject commit d56aa2af446b970171429051ba44c6935a263555
