Add preliminary user level config documentation for extension stuff. Programming
info will come later...

Feel free to reformat and tidy this up...
diff --git a/CHANGES b/CHANGES
index cfa9884..f46f964 100644
--- a/CHANGES
+++ b/CHANGES
@@ -5,6 +5,9 @@
 
  Changes between 0.9.1c and 0.9.2
 
+  *) Add preliminary config info for new extension code.
+     [Steve Henson]
+
   *) Make RSA_NO_PADDING really use no padding.
      [Ulf Moeller <ulf@fitug.de>]