Added character set filter to random code generator, e.g. for client_id.

Change-Id: Ifc1f4be39752806baaaa0be3bc69f55558360f56
diff --git a/core/Changes b/core/Changes
index c1b2d80..b599c9a 100644
--- a/core/Changes
+++ b/core/Changes
@@ -1,7 +1,7 @@
 # version 0.63.2
 2021-06-11
  - Updated OAuth2 token length & secure random algorithm config.
-
+ - Added character set filter to random code generator, e.g. for client_id.
 # version 0.63.1
 2021-03-25
  - Updated Koral version for InfoController.