SF patch 707900, fixing bug 702858, by Steven Taschuk.
Copying a new-style class that had a reference to itself didn't work.
(The same thing worked fine for old-style classes.)
diff --git a/Misc/NEWS b/Misc/NEWS
index 35b35b8..2ca8e9e 100644
--- a/Misc/NEWS
+++ b/Misc/NEWS
@@ -70,6 +70,10 @@
Library
-------
+- copy.py: applied SF patch 707900, fixing bug 702858, by Steven
+ Taschuk. Copying a new-style class that had a reference to itself
+ didn't work. (The same thing worked fine for old-style classes.)
+
- difflib.py has two new functions: context_diff() and unified_diff().
- More fixes to urllib (SF 549151): (a) When redirecting, always use