language: python
python:
  - "2.7"
  - "3.4"
  - "3.5"
  - "3.6"
install: "pip install -r requirements.txt"
script: ./tests/run_tests.sh

language: python
python:
  - "2.7"
  - "3.5"
  - "3.6"
  - "3.7"
  - "3.8"
install: "pip install -r requirements.txt"
script: ./tests/run_tests.sh

Remove 3.4 as unsupported by LXML & add 3.7 and 3.8 prematurely
Remove 3.4 as unsupported by LXML & add 3.7 and 3.8 prematurely