Teach the peephole optimizer to fold simple constant expressions.
diff --git a/Misc/NEWS b/Misc/NEWS
index af04ecf..eb40d97 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -13,6 +13,9 @@
 - min() and max() now support key= arguments with the same meaning as in
   list.sort().
 
+- The peephole optimizer now performs simple constant folding in expressions:
+      (2+3) --> (5).
+
 
 Extension Modules
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