Added DocBits length test.

Change-Id: I1b5e98088dcdc881e6c4c5c801b5decccaae8392
diff --git a/Changes b/Changes
index 9ed843c..d48d3ac 100644
--- a/Changes
+++ b/Changes
@@ -1,4 +1,4 @@
-0.58.0 2018-08-23
+0.58.0 2018-09-03
     - [feature] Implemented referencing cached collection (margaretha)
     - [feature] Implemented deserialization of collection with array values
       and cache option (margaretha)
@@ -18,6 +18,8 @@
     - [cleanup] Move caching mechanism to toFilter() phase (diewald)
     - [cleanup] Rewrite test suite for caching to be part of
       regular test suite (diewald)
+    - [bugfix] Fixed missing docs in VC cache (margaretha)
+    
 
 0.57 2018-04-05
     - [feature] Support text queries in metadata