Add news entries for the dictionary optimizations.
diff --git a/Misc/NEWS b/Misc/NEWS
index d4aef1e..4a55892 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -12,6 +12,10 @@
Core and builtins
-----------------
+- Optimized dict iterators, creating separate types for each
+ and having them reveal their length. Also optimized the
+ methods: keys(), values(), and items().
+
- Implemented a newcode opcode, LIST_APPEND, that simplifies
the generated bytecode for list comprehensions and further
improves their performance (about 35%).