Add performance hints

Change-Id: Ie7ac6e9e1a17da9d50447146566491018ae7108b
diff --git a/Changes b/Changes
index 837c1f7..5914da4 100644
--- a/Changes
+++ b/Changes
@@ -1,5 +1,6 @@
 0.58 2024-09-11
         - Remove Directory::Iterator and replace it with Mojo::File.
+        - Add performance hint.
 
 0.57 2024-07-26
         - Support award notes in i5.