PyCA cryptography 2.1.4 released

[Paul Kehrer]

PyCA cryptography 2.1.4 has been released to PyPI. cryptography includes both
high level recipes and low level interfaces to common cryptographic algorithms
such as symmetric ciphers, message digests, and key derivation functions. We
support Python 2.7, Python 3.4+, and PyPy.

Changelog:
* Added X509_up_ref for an upcoming pyOpenSSL release.

-Paul Kehrer (reaperhulk)