Update to Lucene 5 (second step)

Change-Id: I6c2a6ceb4c24e5d99f22a1dde89cdb93d1aab891
diff --git a/Changes b/Changes
index 03ca302..707059d 100644
--- a/Changes
+++ b/Changes
@@ -1,4 +1,5 @@
 0.54 2015-09-25
+   	- [performance] Updated Lucene dependency from 4.10.3 to 5.0.0 (diewald)
 
 0.53 2015-09-25
         - [feature] Implemented new KrillCollection (diewald)