add uint32 change to client api to the changelog

CHANGELOG

@@ -1,6 +1,10 @@
 The changelog tracks changes to the public API.
 Internal refactorings and bug fixes are not reported here.
 
-2017-04-14 jpfr <julius.pfrommer@web.de>
+2017-05-03 pro <profanter at fortiss.org>
+
+    * Array dimensions are UInt32 also for the highlevel client read service
+
+2017-04-14 jpfr <julius.pfrommer at web.de>
 
     * Auto-instantiate only child nodes marked as mandatory (fixes #1004)