Add missing NEWS and ACK entries for r64791
diff --git a/Misc/NEWS b/Misc/NEWS
index d942849..b9affe5 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -10,6 +10,10 @@
Core and Builtins
-----------------
+- Issue #2517: Allow unicode messages in Exceptions again by correctly
+ bypassing the instance dictionary when looking up __unicode__ on
+ new-style classes.
+
- Issue #3242: Fix a crash inside the print statement, if sys.stdout is
set to a custom object whose write() method happens to install
another file in sys.stdout.