matrix:
  include:
    - language: python
      sudo: false
      python: "2.7"
      install:
        - pip install -e .[pythonz] --upgrade
        - pip install pytest
      script: py.test -rws tests/
    - language: python
      sudo: false
      python: "3.3"
      install:
        - pip install -e . --upgrade
        - pip install pytest
      script: py.test -rws tests/ --ignore=tests/test_install.py
    - language: python
      sudo: false
      python: "3.4"
      install:
        - pip install -e . --upgrade
        - pip install pytest
      script: py.test -rws tests/ --ignore=tests/test_install.py
    - language: python
      sudo: false
      python: "3.5"
      install:
        - pip install -e . --upgrade
        - pip install pytest
      script: py.test -rws tests/ --ignore=tests/test_install.py
    - language: python
      sudo: false
      python: "3.6"
      install:
        - pip install -e .[pythonz] --upgrade
        - pip install pytest
      script: py.test -rws tests/
    - language: python
      sudo: false
      python: "pypy"
      install:
        - pip install -e .[pythonz] --upgrade
        - pip install pytest
      script: py.test -rws tests/
    - language: nix
matrix:
  include:
    - language: python
      sudo: false
      python: "2.7"
      install:
        - pip install -e .[pythonz] --upgrade
        - pip install pytest
      script: py.test -rws tests/
    - language: python
      sudo: false
      python: "3.4"
      install:
        - pip install -e . --upgrade
        - pip install pytest
      script: py.test -rws tests/ --ignore=tests/test_install.py
    - language: python
      sudo: false
      python: "3.5"
      install:
        - pip install -e . --upgrade
        - pip install pytest
      script: py.test -rws tests/ --ignore=tests/test_install.py
    - language: python
      sudo: false
      python: "3.6"
      install:
        - pip install -e .[pythonz] --upgrade
        - pip install pytest
      script: py.test -rws tests/
    - language: python
      sudo: false
      python: "pypy"
      install:
        - pip install -e .[pythonz] --upgrade
        - pip install pytest
      script: py.test -rws tests/
    - language: nix

Drop EOL'd Python 3.3 from Travis builds
Drop EOL'd Python 3.3 from Travis builds

Python 3.3 reached EOL a couple of months ago, and setuptools dropped support
for it earlier this year: pypa/setuptools@7392f01ff . As a result, the 3.3 entry in the
build matrix has been erroring out since at least #196.