old_contents: from distutils.core import setup
  
  setup(
      name='Pi-Pin-Manager',
      version='1.1.1',
      author='Brian Hines',
      author_email='brian@projectweekend.net',
      packages=['pi_pin_manager'],
      url='http://projectweekend.github.io/Pi-Pin-Manager/',
      license='LICENSE.txt',
      description='Setup Raspberry Pi GPIO pins using a configuration file, not boilerplate.',
      long_description=open('README.txt').read(),
      install_requires=[
          "PyYAML == 3.11",
          "RPi.GPIO == 0.5.11",
      ],
  )
  
new_contents: from distutils.core import setup
  
  setup(
      name='Pi-Pin-Manager',
      version='1.1.1',
      author='Brian Hines',
      author_email='brian@projectweekend.net',
      packages=['pi_pin_manager'],
      url='http://projectweekend.github.io/Pi-Pin-Manager/',
      license='LICENSE.txt',
      description='Setup Raspberry Pi GPIO pins using a configuration file, not boilerplate.',
      long_description=open('README.txt').read(),
      install_requires=[
          "Cerberus == 0.9.1",
          "PyYAML == 3.11",
          "RPi.GPIO == 0.5.11",
      ],
  )
  
subject: Add cerberus