old_contents: #!/usr/bin/env python
  import os
  from setuptools import setup
  
  
  def read(fname):
      with open(os.path.join(os.path.abspath(os.path.dirname(__file__)), fname), 'r') as infile:
          content = infile.read()
      return content
  
  
  setup(
      name='marshmallow-polyfield',
      version='5.10',
      description='An unofficial extension to Marshmallow to allow for polymorphic fields',
      long_description=read('README.rst'),
      long_description_content_type='text/x-rst',
      author='Matt Bachmann',
      author_email='bachmann.matt@gmail.com',
      url='https://github.com/Bachmann1234/marshmallow-polyfield',
      packages=['marshmallow_polyfield'],
      license='Apache 2.0',
      keywords=['serialization', 'rest', 'json', 'api', 'marshal',
                'marshalling', 'deserialization', 'validation', 'schema'],
      python_requires='>=3.5',
      install_requires=['marshmallow>=3.0.0b10'],
      classifiers=[
          'Intended Audience :: Developers',
          'License :: OSI Approved :: Apache Software License',
          'Programming Language :: Python :: 3',
          'Programming Language :: Python :: 3.6',
          'Programming Language :: Python :: 3.7',
          'Programming Language :: Python :: Implementation :: CPython',
          'Programming Language :: Python :: Implementation :: PyPy',
      ],
  )
  
new_contents: #!/usr/bin/env python
  import os
  from setuptools import setup
  
  
  def read(fname):
      with open(os.path.join(os.path.abspath(os.path.dirname(__file__)), fname), 'r') as infile:
          content = infile.read()
      return content
  
  
  setup(
      name='marshmallow-polyfield',
      version='5.11',
      description='An unofficial extension to Marshmallow to allow for polymorphic fields',
      long_description=read('README.rst'),
      long_description_content_type='text/x-rst',
      author='Matt Bachmann',
      author_email='bachmann.matt@gmail.com',
      url='https://github.com/Bachmann1234/marshmallow-polyfield',
      packages=['marshmallow_polyfield'],
      license='Apache 2.0',
      keywords=['serialization', 'rest', 'json', 'api', 'marshal',
                'marshalling', 'deserialization', 'validation', 'schema'],
      python_requires='>=3.5',
      install_requires=['marshmallow>=3.0.0b10'],
      classifiers=[
          'Intended Audience :: Developers',
          'License :: OSI Approved :: Apache Software License',
          'Programming Language :: Python :: 3',
          'Programming Language :: Python :: 3.6',
          'Programming Language :: Python :: 3.7',
          'Programming Language :: Python :: Implementation :: CPython',
          'Programming Language :: Python :: Implementation :: PyPy',
      ],
  )
  
subject: Bump version