changes: document optimizer change
diff --git a/doc/changes.src b/doc/changes.src
index d0abb5b..b39d3a5 100644
--- a/doc/changes.src
+++ b/doc/changes.src
@@ -39,6 +39,10 @@
 
 \b Numerous bug fixes, especially to the AES, AVX and VTX instructions.
 
+\b The optimizer now always runs until it converges.  It also runs even
+  when disabled, but doesn't optimize.  This allows most forward references
+  to be resolved properly.
+
 
 \S{cl-2.03.01} Version 2.03.01