ethereum tox & travis config

.travis.yml

language: python
python: 3.5
sudo: required
dist: trusty
before_install:
- sudo add-apt-repository -y ppa:ethereum/ethereum
- sudo apt-get update
- sudo apt-get install -y solc
env:
  matrix:
  - TOX_ENV=py27
  - TOX_ENV=py34
  - TOX_ENV=py35
  global:
    secure: cKbIgpTJ1yjKLBxpCEiT6IH7NShDWZUE+BvnrAfc+ujCsR6LyLJcKxFQmKnWryJCqg7fp82Ep2bF2oDKzanAROar2xDY1SFGbai42seYMaFCw53YPGJ6u3VNCcfT0rN9BWgE7el/m4fjcD6CRsZYKArNNJbMX8csRt3uXXCFLso=
install:
  - "travis_retry pip install setuptools --upgrade"
  - "travis_retry pip install tox"
script:
  - tox -e $TOX_ENV -- --ignore ethereum/tests/test_vm.py --ignore ethereum/tests/test_state.py
  - tox -e $TOX_ENV -- ethereum/tests/test_vm.py
  - tox -e $TOX_ENV -- ethereum/tests/test_state.py
  - tox -e coverage
after_success:
- coveralls
after_script:
  - cat .tox/$TOX_ENV/log/*.log
notifications:
  slack:
    secure: W/UAhQ/GgYwMWrl3aiVAVOWr4WGdWrxUOX/rTB3ZgwDwGqDYLzQO5UqbsQlo1JXPZ6JOWfIPMURhHu7DSfue9dBW6xQ+NL+bFHe9lSXG4nqFK3IjezYyTBzNRJRDbGUvSSqgj6D5cwhJ8BjfUIRPbJz3CxL64KmsNXezEaMY60w=
deploy:
  provider: pypi
  user: ethereum_pypi_automated
  password:
    secure: FvkEn1xULi9mGxAL9sKlTuxJZvk0Uyd2GaDPAHN5ZAfaJUNwzA6+m7PRAMPd44Uy/LOw0+Ah9X1rxAxZc+7yx+FJjwH1Nl8MjtqYTWp+Ue6TFUNdJXNHjekC5ce4rbULudrqlmwmaWzi5iRC7qhpxuTg1y3iBw3Fsd8E82qbDac=
  on:
    tags: true
    repo: ethereum/pyethereum
    branch: develop
after_deploy:
- ./.release_notify.sh

tox.ini

[tox]
envlist = 
    covclean,
    py27,
    py34,
    py35,
    coverage

[testenv]
commands =
    coverage run --source ethereum --branch --parallel -m py.test {posargs}
deps =
    coverage>=4.0.3
    -r{toxinidir}/dev_requirements.txt

[testenv:covclean]
skip_install = True
deps = 
    coverage>=4.0.3
commands = 
    coverage erase

[testenv:coverage]
skip_install = True
deps = 
    coverage>=4.0.3
commands = 
    coverage combine
    coverage report --show-missing