Set supported python versions for this release.

Author: brunns

setup.py

@@ -49,6 +49,7 @@ def read(fname):
     provides=['hamcrest'],
     long_description=read('README.rst'),
     install_requires=['six'],
+    python_requires='>=2.6, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*, !=3.4.*, <4',
     classifiers=[
         'Development Status :: 5 - Production/Stable',
         'Environment :: Console',
@@ -57,12 +58,8 @@ def read(fname):
         'Natural Language :: English',
         'Operating System :: OS Independent',
         'Programming Language :: Python :: 2',
-        'Programming Language :: Python :: 2.6',
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        '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 :: 3.7',