PyCA cryptography 1.7.2 released

[Paul Kehrer]

PyCA cryptography 1.7.2 has been released to PyPI. cryptography is a
package which provides cryptographic recipes and primitives to Python
developers. Our goal is for it to be your "cryptographic standard library".
We support Python 2.6-2.7, Python 3.3+, and PyPy.

This release updates the version of OpenSSL shipping in the Windows and
macOS wheels to 1.0.2k. There are no other changes.

-Paul Kehrer (reaperhulk)