Fix packaging

Author: cyberdelia

LICENSE

@@ -1,5 +1,5 @@
 Copyright (©) 2008 Andreas Pelme <[email protected]>
-Copyright (©) 2011-2014 Timothée Peignier <[email protected]>
+Copyright (©) 2011-2018 Timothée Peignier <[email protected]>
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

setup.cfg

@@ -1,3 +1,5 @@
 [wheel]
 universal = 1
 
+[metadata]
+license_file = LICENSE

setup.py

@@ -4,10 +4,6 @@
 from setuptools import setup, find_packages
 import sys
 
-install_requires = []
-if (sys.version_info[0], sys.version_info[1]) < (3, 2):
-    install_requires.append('futures>=2.1.3')
-
 setup(
     name='django-pipeline',
     version='1.6.13',
@@ -20,7 +16,7 @@
     license='MIT',
     packages=find_packages(exclude=['tests', 'tests.tests']),
     zip_safe=False,
-    install_requires=install_requires,
+    extras_require={ ':python_version<"3"': ['futures>=2.1.3'] },
     include_package_data=True,
     keywords=('django pipeline asset compiling concatenation compression'
               ' packaging'),