language: python
python:
  - '3.5'
  - '3.6'
  - nightly
install:
  - pip install .
before_script:
  - "export DISPLAY=:99.0"
  - "sh -e /etc/init.d/xvfb start"
  - sleep 3 # give xvfb some time to start
script:
  - py.test

language: python
python:
  - '3.6'
  - nightly
install:
  - pip install .
before_script:
  - "export DISPLAY=:99.0"
  - "sh -e /etc/init.d/xvfb start"
  - sleep 3 # give xvfb some time to start
script:
  - py.test

Drop support for python < 3.6
Drop support for python < 3.6

I wanna use f-strings, damn it.
