github auth credentials for running integration tests.
Include list icon for env declaration
dont build-matrix, just run once per version
Use imhotepbot instead of my creds.
py3 update
report_line seems to take a string or potentially an array. Consolidate on array.

Corollary: api docs on this are awful.
Merge pull request #62 from justinabrahms/run-integration-tests

github auth credentials for running integration tests.