[pkg] require python >= 3.4
This avoid pip pulling a version that does not run on python2 when using a
python2 environment.
Since we already released some 3.27 releases in pypi, I think we should release
3.27.3 and remove releases 3.27.2, 3.27.1 and 3.27.0 from pypi.
[tox]
envlist = py3,flake8,check-manifest
[testenv]
deps =
pytest
commands =
{envpython} -m pytest {posargs:test}
[testenv:flake8]
basepython = python3
skip_install = true
deps =
flake8
commands = flake8
[testenv:check-manifest]
skip_install = true
deps =
check-manifest
commands =
{envpython} -m check_manifest {toxinidir}
[flake8]
exclude = cubicweb_%(cubename)s/migration/*,test/data/*,.tox/*