Make Sys::Info optional

Change-Id: I53c6857e4e71906d54c2d81a2a0788a70416c1b1
diff --git a/Changes b/Changes
index 72cfff9..2a9e3d6 100644
--- a/Changes
+++ b/Changes
@@ -14,6 +14,7 @@
         - Removed deprecated 'pretty' flag.
         - Fix RWK paragraph handling.
         - Updated 'Clone' dependency in Makefile.
+        - Make Sys::Info optional.
 
 0.40 2020-03-03
         - Fixed XIP parser.