pyo3 0.6.0

[tox]
envlist = py27,
          py35,
          py36,
          py37,
minversion = 3.4.0
skip_missing_interpreters = true

[testenv]
description = Run the unit tests under {basepython}
skip_install = True
usedevelop = True
whitelist_externals = cargo
commands = cargo test