Added nonce helper to CSP plugin

Change-Id: I78b48e84222efe348abecb5d45d4f5c8d59d7335
diff --git a/Changes b/Changes
index 66c56ae..3c9262c 100755
--- a/Changes
+++ b/Changes
@@ -1,4 +1,4 @@
-0.41 2021-01-25
+0.41 2021-01-26
         - Introduce CORS headers to the proxy.
         - Introduce Content Security Policy.
         - Remove default api endpoint from config to
@@ -7,6 +7,7 @@
         - Added advice in Readme regarding scripts in
           Windows Powershell (lerepp).
         - Establish CSP plugin.
+        - Added nonce helper to CSP plugin.
 
 0.40 2020-12-17
         - Modernize ES and fix in-loops.