Implement requestMsg() for client-server-communication to receive data from the server

Change-Id: I6399679449199a3f5e75ca47348b4fd875f08142
diff --git a/Changes b/Changes
index 8539b59..9bd15fb 100755
--- a/Changes
+++ b/Changes
@@ -1,9 +1,11 @@
-0.38 2020-03-17
+0.38 2020-03-30
         - Support X-Forwarded-Host name for proxy.
         - Document API URI.
         - Improve redirect handling in proxy.
         - Added support for OAuth2 client registration.
         - Added support for OAuth2 client listing.
+        - Added requestMsg() methods to clients for retrieving
+          data from the embedding server.
 
 0.37 2020-01-16
         - Removed deprecated 'kalamar_test_port' helper.