Added a check for OAuth2 client, VC, and group name length.

Change-Id: I716854dd0f93c4cda80304c4c6cf34fc35e890ea
diff --git a/core/Changes b/core/Changes
index 023b7f9..32a842b 100644
--- a/core/Changes
+++ b/core/Changes
@@ -2,6 +2,8 @@
 13/11/2019
    - Added warnings when requesting non-public fields via the search API with 
      accessRewriteDisabled (margaretha, resolved #43).
+14/11/2019
+   - Added a check for OAuth2 client, VC, and group name length (margaretha)
 
 # version 0.62.1
 08/07/2019