old_contents: from distutils.core import setup, Extension
  
  murmur3 = Extension('cassandra.murmur3', sources=['cassandra/murmur3.c'])
  
  setup(
      name='cassandra',
      version='0.1',
      description='Python driver for Cassandra',
      packages=["cassandra"],
      ext_modules=[murmur3],
      install_requires=['pyev', 'python-snappy'],
      test_requires=['nose', 'mock'])
  
new_contents: from distutils.core import setup, Extension
  
  murmur3 = Extension('cassandra.murmur3', sources=['cassandra/murmur3.c'])
  
  setup(
      name='cassandra',
      version='0.1',
      description='Python driver for Cassandra',
      packages=["cassandra"],
      ext_modules=[murmur3],
      install_requires=['pyev', 'python-snappy', 'futures'],
      test_requires=['nose', 'mock'])
  
subject: Include futures in setup.py requirements