Update supported versions (#548)

* Add python_requires
* Update version classifiers
* EOL Python 3.3 no longer supported

Author: hugovk

README.rst

@@ -29,13 +29,13 @@ pytest-django allows you to test your Django project/applications with the
 * Version compatibility:
 
   * Django: 1.8-1.11 and latest master branch (compatible at the time of each release)
-  * Python: CPython 2.7,3.3-3.6 or PyPy 2,3
+  * Python: CPython 2.7, 3.4-3.6 or PyPy 2, 3
   * pytest: >2.9.x
 
 * Licence: BSD
 * Project maintainers: Andreas Pelme, Floris Bruynooghe and Daniel Hahler
 * `All contributors <https://github.com/pytest-dev/pytest-django/contributors>`_
-* Github repository: https://github.com/pytest-dev/pytest-django
+* GitHub repository: https://github.com/pytest-dev/pytest-django
 * `Issue tracker <http://github.com/pytest-dev/pytest-django/issues>`_
 * `Python Package Index (PyPI) <https://pypi.python.org/pypi/pytest-django/>`_
 

setup.py

@@ -28,6 +28,7 @@ def read(fname):
     license='BSD-3-Clause',
     packages=['pytest_django'],
     long_description=read('README.rst'),
+    python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*',
     setup_requires=['setuptools_scm>=1.11.1'],
     install_requires=['pytest>=2.9'],
     classifiers=['Development Status :: 5 - Production/Stable',
@@ -38,11 +39,11 @@ def read(fname):
                  'Programming Language :: Python',
                  'Topic :: Software Development :: Testing',
                  'Programming Language :: Python :: 2.7',
-                 'Programming Language :: Python :: 3.2',
-                 'Programming Language :: Python :: 3.3',
                  'Programming Language :: Python :: 3.4',
                  'Programming Language :: Python :: 3.5',
                  'Programming Language :: Python :: 3.6',
+                 'Programming Language :: Python :: Implementation :: CPython',
+                 'Programming Language :: Python :: Implementation :: PyPy',
                  ],
     # the following makes a plugin available to pytest
     entry_points={'pytest11': ['django = pytest_django.plugin']})

tox.ini

@@ -2,7 +2,6 @@
 envlist =
     - py{35,36}-dj{20,111,110,19,18}-postgres
     - py34-dj{20,111,110}-postgres
-    - py33-dj18-postgres
     - py27-dj{111,110}-{mysql_innodb,mysql_myisam,postgres}
     - py27-dj{111,110,19,18}-postgres
     - py{36,py27}-checkqa