Log Message:
Update py-cryptography to 1.1:

1.1 - 2015-10-28
~~~~~~~~~~~~~~~~

* Added support for Elliptic Curve Diffie-Hellman with
  :class:`~cryptography.hazmat.primitives.asymmetric.ec.ECDH`.
* Added :class:`~cryptography.hazmat.primitives.kdf.x963kdf.X963KDF`.
* Added support for parsing certificate revocation lists (CRLs) using
  :func:`~cryptography.x509.load_pem_x509_crl` and
  :func:`~cryptography.x509.load_der_x509_crl`.
* Add support for AES key wrapping with
  :func:`~cryptography.hazmat.primitives.keywrap.aes_key_wrap` and
  :func:`~cryptography.hazmat.primitives.keywrap.aes_key_unwrap`.
* Added a ``__hash__`` method to :class:`~cryptography.x509.Name`.
* Add support for encoding and decoding elliptic curve points to a byte string
  form using
  \ 
:meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicNumbers. \ 
encode_point`
  and
  \ 
:meth:`~cryptography.hazmat.primitives.asymmetric.ec.EllipticCurvePublicNumbers. \ 
from_encoded_point`.
* Added :meth:`~cryptography.x509.Extensions.get_extension_for_class`.
* :class:`~cryptography.x509.CertificatePolicies` are now supported in the
  :class:`~cryptography.x509.CertificateBuilder`.
* ``countryName`` is now encoded as a ``PrintableString`` when creating subject
  and issuer distinguished names with the Certificate and CSR builder classes.