After looking at older documentation of flake8, I think all flake8 3.* version…

After looking at older documentation of flake8, I think all flake8 3.* version should work: http://flake8.pycqa.org/en/3.0.0/user/python-api.html. So removing the version check completly.

After looking at older documentation of flake8, I think all flake8 3.* version…
f8678420 · Frederic Bastien · 8b037982 · f8678420
--- a/setup.py
+++ b/setup.py
@@ -101,7 +101,7 @@ def do_setup():
          install_requires=['numpy>=1.9.1', 'scipy>=0.14', 'six>=1.9.0'],
          # pygments is a dependency for Sphinx code highlight
          extras_require={
-              'test': ['nose>=1.3.0', 'parameterized', 'flake8<3,>3.3'],
+              'test': ['nose>=1.3.0', 'parameterized', 'flake8'],
              'doc': ['Sphinx>=0.5.1', 'pygments']
          },
          package_data={