six>=1.10.0

[:python_version < '3.5']
typing

[build]
Cython>=0.25.2,<0.26

[docs]
Sphinx>=1.4,<1.5

[test]
flake8>=3.0.0,<4.0.0
pytest>=3.0.0,<4.0.0
tox>=2.5.0,<3.0.0

[test:python_version>='3.0']
mypy-lang>=0.4.0,<0.5.0
