Removed deprecated numberOf() method from KrillIndex

Change-Id: I0da9d95a934929a21a680b0cddff931f15c88a89
diff --git a/Changes b/Changes
index 1ddd2d7..3eebcdd 100644
--- a/Changes
+++ b/Changes
@@ -1,6 +1,8 @@
 0.58.8 2019-11-05
     - [bugfix] Fix offset retrieval in concurrent searches
       (diewald)
+    - [cleanup] Removed deprecated numberOf() method from index
+      (diewald)
 
 0.58.7 2019-09-16
     - [bugfix] Fix the behaviour of negative operands in virtual