old_contents:  #!/usr/bin/env python
  import os
  import re
  import sys
  import warnings
  import versioneer
  from setuptools import setup, find_packages
  
  DISTNAME = 'xhistogram'
  LICENSE = 'MIT'
  AUTHOR = 'xhistogram Developers'
  AUTHOR_EMAIL = 'rpa@ldeo.columbia.edu'
  URL = 'https://github.com/xgcm/xhistogram'
  CLASSIFIERS = [
      'Development Status :: 4 - Beta',
      'License :: OSI Approved :: Apache Software License',
      'Operating System :: OS Independent',
      'Intended Audience :: Science/Research',
      'Programming Language :: Python',
      'Programming Language :: Python :: 3',
      'Programming Language :: Python :: 3.6',
      'Topic :: Scientific/Engineering',
  ]
  
  INSTALL_REQUIRES = ['xarray', 'dask', 'numpy>=1.16']
  PYTHON_REQUIRES = '>=3.6'
  
  DESCRIPTION = "Fast, flexible, label-aware histograms for numpy and xarray"
  def readme():
      with open('README.rst') as f:
          return f.read()
  
  setup(name=DISTNAME,
        version=versioneer.get_version(),
        cmdclass=versioneer.get_cmdclass(),
        license=LICENSE,
        author=AUTHOR,
        author_email=AUTHOR_EMAIL,
        classifiers=CLASSIFIERS,
        description=DESCRIPTION,
        long_description=readme(),
        install_requires=INSTALL_REQUIRES,
        python_requires=PYTHON_REQUIRES,
        url=URL,
        packages=find_packages())
  
new_contents:  #!/usr/bin/env python
  import os
  import re
  import sys
  import warnings
  import versioneer
  from setuptools import setup, find_packages
  
  DISTNAME = 'xhistogram'
  LICENSE = 'MIT'
  AUTHOR = 'xhistogram Developers'
  AUTHOR_EMAIL = 'rpa@ldeo.columbia.edu'
  URL = 'https://github.com/xgcm/xhistogram'
  CLASSIFIERS = [
      'Development Status :: 4 - Beta',
      'License :: OSI Approved :: Apache Software License',
      'Operating System :: OS Independent',
      'Intended Audience :: Science/Research',
      'Programming Language :: Python',
      'Programming Language :: Python :: 3',
      'Programming Language :: Python :: 3.6',
      'Topic :: Scientific/Engineering',
  ]
  
  INSTALL_REQUIRES = ['xarray>=0.12.0', 'dask', 'numpy>=1.16']
  PYTHON_REQUIRES = '>=3.6'
  
  DESCRIPTION = "Fast, flexible, label-aware histograms for numpy and xarray"
  def readme():
      with open('README.rst') as f:
          return f.read()
  
  setup(name=DISTNAME,
        version=versioneer.get_version(),
        cmdclass=versioneer.get_cmdclass(),
        license=LICENSE,
        author=AUTHOR,
        author_email=AUTHOR_EMAIL,
        classifiers=CLASSIFIERS,
        description=DESCRIPTION,
        long_description=readme(),
        install_requires=INSTALL_REQUIRES,
        python_requires=PYTHON_REQUIRES,
        url=URL,
        packages=find_packages())
  
subject: update install reqs