Remove python3.3 and 3.5 support

Author: tOgg1

.travis.yml

@@ -11,9 +11,7 @@ deploy:
   user: trmd
 env:
 - TOXENV=py36
-- TOXENV=py35
 - TOXENV=py34
-- TOXENV=py33
 - TOXENV=py27
 install: pip install -U tox
 language: python

setup.py

@@ -42,9 +42,7 @@
         "Programming Language :: Python :: 2",
         'Programming Language :: Python :: 2.7',
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.3',
         'Programming Language :: Python :: 3.4',
-        'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
     ],
     test_suite='tests',

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py27, py33, py34, py35, py36, flake8
+envlist = py27, py34, py36, flake8
 skip_missing_interpreters = 
     true