Removed 2.7 from setup.py and added 3.5 to tox.ini .

Author: rohe

setup.py

@@ -37,11 +37,7 @@ def run_tests(self):
         sys.exit(errno)
 
 
-# Python 2.7 and later ship with importlib and argparse
-if sys.version_info[0] == 2 and sys.version_info[1] == 6:
-    extra_install_requires = ["importlib", "argparse"]
-else:
-    extra_install_requires = []
+extra_install_requires = []
 
 with open('src/oidcmsg/__init__.py', 'r') as fd:
     version = re.search(r'^__version__\s*=\s*[\'"]([^\'"]*)[\'"]',
@@ -60,7 +56,6 @@ def run_tests(self):
     classifiers=[
         "Development Status :: 4 - Beta",
         "License :: OSI Approved :: Apache Software License",
-        "Programming Language :: Python :: 2.7",
         "Programming Language :: Python :: 3.4",
         "Programming Language :: Python :: 3.5",
         "Programming Language :: Python :: 3.6",

tox.ini

@@ -1,5 +1,5 @@
 [tox]
-envlist = py{27,34,36},docs,quality
+envlist = py{34,35,36,37},docs,quality
 
 [testenv]
 setenv =