tornado>=6

[dev]
coverage==4.5.3
flake8==3.7.7
flake8-fixme==1.1.0
flake8-print==3.1.0
nose==1.3.7
readme-renderer==24.0
sphinx==2.0.0
twine==1.13.0
wheel==0.33.1
yapf==0.26.0

[docs]
sphinx==2.0.0
