[pkg] Drop "support" of unused subpackage_of option in setup.py
__pkginfo__ does not declare subpackage_of.
[tox]
envlist = py27,py34,flake8
[testenv]
sitepackages = true
deps =
pytest
commands =
{envpython} -m pytest {posargs:test}
[testenv:flake8]
skip_install = true
whitelist_externals =
flake8
deps =
flake8
commands = flake8
[flake8]
exclude = migration/*,test/data/*,setup.py,.tox/*