Prepare 6.0.0-RELEASE [ci skip]

thekid · thekid · commit 1fc24a78a224 · 2015-02-08T13:44:36.000+01:00
diff --git a/ChangeLog.md b/ChangeLog.md
@@ -1,6 +1,8 @@
 XP Framework Core ChangeLog
 ========================================================================
 
+## ?.?.? / ????-??-??
+
 ## 6.0.0 / ????-??-??
 
 ### Heads up!
