Sync Python version requirements.

Author: kdeldycke

setup.py

@@ -127,7 +127,7 @@ def long_description():
 
     packages=find_packages(),
     # https://www.python.org/dev/peps/pep-0345/#version-specifiers
-    python_requires='>= 2.7, != 3.0.*, != 3.1.*, != 3.2.*',
+    python_requires='>= 2.7, != 3.0.*, != 3.1.*, != 3.2.*, != 3.3.*',
     install_requires=DEPENDENCIES,
     tests_require=DEPENDENCIES + EXTRA_DEPENDENCIES['tests'],
     extras_require=EXTRA_DEPENDENCIES,