Add role() method to state object

Change-Id: Ie98f15c83d94c6cb1915942bba6c2ba17ae321e0
diff --git a/Changes b/Changes
index 75dc6b0..470ead6 100755
--- a/Changes
+++ b/Changes
@@ -1,5 +1,6 @@
 0.40 2020-10-09
         - Modernize ES and fix in-loops.
+        - add roll() method to state object.
 
 0.39 2020-10-07
         - Add information on secret file to Readme.