17.5.0
Move package into src
Convert test_rand to use pytest-style tests (#563)
Drop this, it's no good.
fix errors with latest flake8 (#710)
Add an informative __main__.py (#620)
restore a subset of the rand module (#708)
Export keying material support (#725)
Convert a few more small test classes to be pytest-style (#585)
Rip out the last vestages of unittest from the test suite (#599)