Merge branch 'master' into 'master'

remove usage of six

See merge request !9

django_yarnpkg/context_processors.py

 # -*- coding: utf-8 -*-
 import os.path
 import json
-import six
 from django.conf import settings
 from django.utils.datastructures import OrderedSet
 

django_yarnpkg/tests/test_yarn.py

 from django.core.management import call_command
 from django.conf import settings
 from django.test import TestCase
-from six import StringIO
+from io import StringIO
 from mock import MagicMock
 from ..yarn import yarn_adapter, YarnAdapter
 from .. import conf

setup.py

@@ -23,7 +23,6 @@ setup(
     zip_safe=True,
     install_requires=[
         'django',
-        'six',
     ],
     entry_points="""
       # -*- Entry points: -*-