- Issue #5177: Multiprocessing's SocketListener class now uses

socket.SO_REUSEADDR on all connections so that the user no longer needs

to wait 120 seconds for the socket to expire.

- Adjusted _tkinter to compile without warnings when WITH_THREAD is not

defined (part of issue #5035).

- Issue #5561: Removed the sys.version_info shortcuts from platform's

python_version() and python_version_tuple() since they produced different

output compared to previous Python versions.

- Issue #1034053: unittest now supports skipping tests and expected failures.

- Issue #5068: Fixed the tarfile._BZ2Proxy.read() method that would loop

forever on incomplete input. That caused tarfile.open() to hang when used

with mode 'r' or 'r:bz2' and a fileobj argument that contained no data or

partial bzip2 compressed data.

- Issue #5536: urllib.urlretrieve makes sure to close the file it's writing to

even if an exception occurs.

- Issue #5381: Added object_pairs_hook to the json module. This allows

OrderedDicts to be built by the decoder.

- Issue #2110: Add support for thousands separator and 'n' type

specifier to Decimal.__format__

- Fix Decimal.__format__ bug that swapped the meanings of the '<' and

'>' alignment characters.