Core and builtins
-----------------
+- SF patch 751998 fixes an unwanted side effect of the previous fix
+ for SF bug 742860 (the next item).
+
- SF bug 742860: "WeakKeyDictionary __delitem__ uses iterkeys". This
wasn't threadsafe, was very inefficient (expected time O(len(dict))
instead of O(1)), and could raise a spurious RuntimeError if another
Library
-------
+- A brand new version of IDLE (from the IDLEfork project at
+ SourceForge) is now included as Lib/idlelib. The old Tools/idle is
+ no more.
+
- 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.)
Tools/Demos
-----------
+- Tools/idle is gone; long live Lib/idlelib.
+
- diff.py is a new script for print file diffs in context, unified, or ndiff
formats. Provides an alternate command line interface to difflib.py.