language: python
python:
  - '3.6'

cache: pip

install:
  - pip install -e .
  - pip install -r requirements-dev.txt

script: pytest

dist: focal
language: python
python:
  - '3.6'

cache: pip

install:
  - pip install -e .
  - pip install -r requirements-dev.txt

script: pytest

Use Ubuntu 20.04 in Travis CI
Use Ubuntu 20.04 in Travis CI

The default 16.04 has too old version (3.11.0) of sqlite. We need at
least 3.20.
