language: python
python:
    - "2.7"
    - "3.3"
    - "3.4"
    - "3.5"
    - "3.6"
    - "pypy"
    - "pypy3"
matrix:
    fast_finish: true
install:
    - pip install -r requirements-dev.txt
script:
    - make test_coverage
    - make flake8
after_success:
    - coveralls

language: python
python:
    - "2.7"
    - "3.3"
    - "3.4"
    - "3.5"
    - "3.6"
    - "pypy"
    - "pypy3.3-5.2-alpha1"
matrix:
    fast_finish: true
install:
    - pip install -r requirements-dev.txt
script:
    - make test_coverage
    - make flake8
after_success:
    - coveralls

Use more recent PyPy3 on Travis CI
Use more recent PyPy3 on Travis CI

The default PyPy3 is really old (implements Python 3.2) and some
packages won't cooperate with it anymore.
