characteristic>=14.2.0
klein>=15.3.1
twisted>=15.5.0
jsonschema>=2.0
treq>=15.1.0
six>=1.6.0
xmltodict>=0.9.1
attrs>=15.1.0
testtools>=1.7.1,<1.8.0
iso8601>=0.1.10
toolz>=0.7.4
