remove leading 0 from integer literals
prefix relative imports with .
remove and ignore MANIFEST
python3-compatible collections things
fix namedtuple optional params for python3
explicit str/byte conversion for python3
xrange -> range
iteritems -> items
json.loads(response.content) -> response.json()
map(...) -> list(map(...))
workaround for oauth2client in python3
python-dateutil version: <2.0 to >=2.2
add tox config to test python 2 and 3
update circle.yml to use tox