language: python
python:
  - "3.4"
install:
  - "pip install -r requirements.txt -r requirements-test.txt"
  - "pip install -e ."
script:
  - "pytest"

language: python
python:
  - "3.7"
  - "3.8"
  - "3.9"
install:
  - "pip install -r requirements.txt -r requirements-test.txt"
  - "pip install -e ."
script:
  - "pytest"

Change support Python versions to 3.7, 3.8, 3.9
Change support Python versions to 3.7, 3.8, 3.9
