old_contents: from setuptools import setup, find_packages
  
  
  setup(
      name="mar",
      version="1.2",
      author="Chris AtLee",
      author_email="catlee@mozilla.com",
      packages=find_packages(),
      url="https://github.com/mozilla/build-mar",
      license="MPL 2.0",
      description="MAR (Mozilla ARchive) Python implementation",
      long_description=open('README.md').read(),
      scripts=["scripts/mar.py"],
  )
  
new_contents: from setuptools import setup, find_packages
  
  
  setup(
      name="mar",
      version="1.3pre",
      author="Chris AtLee",
      author_email="catlee@mozilla.com",
      packages=find_packages(),
      url="https://github.com/mozilla/build-mar",
      license="MPL 2.0",
      description="MAR (Mozilla ARchive) Python implementation",
      long_description=open('README.md').read(),
      scripts=["scripts/mar.py"],
  )
  
subject: bump version to 1.3pre