language: python
python:
  - "3.4"
  - "3.5"
  - "3.6"

install:
  - pip install tox

script:
  - tox --skip-missing-interpreters

language: python
python:
  - "3.6"

install:
  - pip install tox

script:
  - tox --skip-missing-interpreters

Drop Python 3.4 and 3.5 from Travis
Drop Python 3.4 and 3.5 from Travis
