Added news of function comparison and hashing by identity
diff --git a/Misc/NEWS b/Misc/NEWS
index 3a68d8c..e3ea276 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -10,6 +10,9 @@
   '\texample \r\n\x00\xff'         # in 2.1
   '\011example \015\012\000\377'   # in 2.0
 
+- Functions are now compared and hashed by identity, not by value, since
+  the func_code attribute is writable.
+
 
 Standard library