old_contents: """Mailmerge build and install configuration."""
  from pathlib import Path
  import setuptools
  
  
  # Read the contents of README file
  PROJECT_DIR = Path(__file__).parent
  README = PROJECT_DIR/"README.md"
  LONG_DESCRIPTION = README.open().read()
  
  
  setuptools.setup(
      name="mailmerge",
      description="A simple, command line mail merge tool",
      long_description=LONG_DESCRIPTION,
      long_description_content_type="text/markdown",
      version="2.2.0",
      author="Andrew DeOrio",
      author_email="awdeorio@umich.edu",
      url="https://github.com/awdeorio/mailmerge/",
      license="MIT",
      packages=["mailmerge"],
      keywords=["mail merge", "mailmerge", "email"],
      install_requires=[
          "click",
          "jinja2",
          "markdown",
          "html5"
      ],
      extras_require={
          "dev": [
              "pdbpp",
              "twine",
              "tox",
          ],
          "test": [
              "check-manifest",
              "freezegun",
              "pycodestyle",
              "pydocstyle",
              "pylint",
              "pytest",
              "pytest-cov",
              "pytest-mock",
          ],
      },
      python_requires='>=3.6',
      entry_points={
          "console_scripts": [
              "mailmerge = mailmerge.__main__:main",
          ]
      },
  )
  
new_contents: """Mailmerge build and install configuration."""
  from pathlib import Path
  import setuptools
  
  
  # Read the contents of README file
  PROJECT_DIR = Path(__file__).parent
  README = PROJECT_DIR/"README.md"
  LONG_DESCRIPTION = README.open().read()
  
  
  setuptools.setup(
      name="mailmerge",
      description="A simple, command line mail merge tool",
      long_description=LONG_DESCRIPTION,
      long_description_content_type="text/markdown",
      version="2.2.0",
      author="Andrew DeOrio",
      author_email="awdeorio@umich.edu",
      url="https://github.com/awdeorio/mailmerge/",
      license="MIT",
      packages=["mailmerge"],
      keywords=["mail merge", "mailmerge", "email"],
      install_requires=[
          "click",
          "jinja2",
          "markdown",
          "html5lib"
      ],
      extras_require={
          "dev": [
              "pdbpp",
              "twine",
              "tox",
          ],
          "test": [
              "check-manifest",
              "freezegun",
              "pycodestyle",
              "pydocstyle",
              "pylint",
              "pytest",
              "pytest-cov",
              "pytest-mock",
          ],
      },
      python_requires='>=3.6',
      entry_points={
          "console_scripts": [
              "mailmerge = mailmerge.__main__:main",
          ]
      },
  )
  
subject: Update setup.py