sudo: false
language: python
install: pip3 install tox-travis
script: tox
matrix:
        include:
                - os: "linux"
                  dist: "xenial"
                  python: "3.5"
                - os: "linux"
                  dist: "xenial"
                  python: "3.6"
                - os: "linux"
                  dist: "xenial"
                  python: "3.7"