Log Message:
Update to 0.4.8. From the changelog:

0.4.8 - 11/12/2014
 - Added more acknowledgements and security considerations
0.4.7 - 11/12/2014
 - Added TLS 1.2 support (Yngve Pettersen and Paul Sokolovsky)
 - Don't offer SSLv3 by default (e.g. POODLE)
 - Fixed bug with PyCrypto_RSA integration
 - Fixed harmless bug that added non-prime into sieves list
 - Added "make test" and "make test-dev" targets (Hubert Kario)
0.4.5 - 3/20/2013
 - **API CHANGE**: TLSClosedConnectionError instead of ValueError when writing
   to a closed connection.  This inherits from socket.error, so should
   interact better with SocketServer (see http://bugs.python.org/issue14574)
   and other things expecting a socket.error in this situation.
 - Added support for RC4-MD5 ciphersuite (if enabled in settings)
   - This is allegedly necessary to connect to some Internet servers.
 - Added TLSConnection.unread() function
 - Switched to New-style classes (inherit from 'object')
 - Minor cleanups
0.4.4 - 2/25/2013
 - Added Python 3 support (Martin von Loewis)
 - Added NPN client support (Marcelo Fernandez)
 - Switched to RC4 as preferred cipher
   - faster in Python, avoids "Lucky 13" timing attacks
 - Fixed bug when specifying ciphers for anon ciphersuites
 - Made RSA hashAndVerify() tolerant of sigs w/o encoded NULL AlgorithmParam
   - (this function is not used for TLS currently, and this tolerance may
      not even be necessary)
0.4.3 - 9/27/2012
 - Minor bugfix (0.4.2 doesn't load tackpy)
0.4.2 - 9/25/2012
 - Updated TACK (compatible with tackpy 0.9.9)
0.4.1 - 5/22/2012
 - Fixed RSA padding bugs (w/help from John Randolph)
 - Updated TACK (compatible with tackpy 0.9.7)
 - Added SNI
 - Added NPN server support (Sam Rushing/Google)
 - Added AnonDH (Dimitris Moraitis)
 - Added X509CertChain.parsePemList
 - Improved XML-RPC (Kees Bos)

0.4.0 - 2/11/2012
 - Fixed pycrypto support
 - Fixed python 2.6 problems

0.3.9.x - 2/7/2012

Much code cleanup, in particular decomposing the handshake functions so they
are readable. The main new feature is support for TACK, an experimental
authentication method that provides a new way to pin server certificates (See
https://github.com/moxie0/Convergence/wiki/TACK ).

Also:

 - Security Fixes
   - Sends SCSV ciphersuite as per RFC 5746, to signal non-renegotiated
     Client Hello.  Does not support renegotiation (never has).
   - Change from e=3 to e=65537 for generated RSA keys, not strictly
     necessary but mitigates risk of sloppy verifier.
   - 1/(n-1) countermeasure for BEAST.

 - Behavior changes:
   - Split cmdline into tls.py and tlstest.py, improved options.
   - Formalized LICENSE.
   - Defaults to closing socket after sending close_notify, fixes hanging.
     problem that would occur sometime when waiting for other party's
     close_notify.
   - Update SRP to RFC 5054 compliance.
   - Removed client handshake "callbacks", no longer support the SRP
     re-handshake idiom within a single handshake function.

 - Bugfixes
   - Added hashlib support, removes Deprecation Warning due to sha and md5.
   - Handled GeneratorExit exceptions that are a new Python feature, and
     interfere with the async code if not handled.

 - Removed:
   - Shared keys (it was based on an ancient I-D, not TLS-PSK).
   - cryptlib support, it wasn't used much, we have enough other options.
   - cryptoIDs (TACK is better).
   - win32prng extension module, as os.urandom is now available.
   - Twisted integration (unused?, slowed down loading).
   - Jython code (ancient, didn't work).
   - Compat support for python versions < 2.7.

 - Additions
   - Support for TACK via TACKpy.
   - Support for CertificateRequest.certificate_authorities ("reqCAs")
   - Added TLSConnection.shutdown() to better mimic socket.
   - Enabled Session resumption for XMLRPCTransport.