update submodules for release v0.12.0

hackape · hackape · commit 3aa513884818 · 2017-05-15T15:23:36.000+08:00
diff --git a/backend b/backend
@@ -1 +1 @@
-Subproject commit 03b9652f8f292ed4136a2f329a4240b6649fefd6
+Subproject commit 2440dbb96347ad10c90c9360e5eb42bb284336a2
diff --git a/frontend b/frontend
@@ -1 +1 @@
-Subproject commit bc7bfc5bb60479f8d701ac07624a9ac6935f8445
+Subproject commit 2d40b7572ecdbde873053dc103708de8473f13fe
