update release date

maasencioh · maasencioh · commit 261d736987ab · 2015-07-24T17:43:43.000+02:00
diff --git a/History.md b/History.md
@@ -1,4 +1,4 @@
-0.4.0 / HEAD
+0.4.0 / 2015-07-24
 ==================
 
 * Add ml.SL.PLS
