old_contents: from setuptools import setup, Extension
  
  module = Extension("bytesop", sources=["bytesop.cpp"])
  setup(
      name="BytesOp",
      author="Jan Brohl",
      author_email="janbrohl@t-online.de",
      url="https://github.com/janbrohl/BytesOp",
      version="0.3",
      description="Module for bitwise operations on bytestrings.",
      ext_modules=[module]
  )
  
new_contents: from setuptools import setup, Extension
  
  module = Extension("bytesop", sources=["bytesop.cpp"])
  setup(
      name="BytesOp",
      author="Jan Brohl",
      author_email="janbrohl@t-online.de",
      url="https://github.com/janbrohl/BytesOp",
      version="0.3",
      description="Module for bitwise operations on bytestrings.",
      ext_modules=[module],
      classifiers=[
          "Development Status :: 3 - Alpha",
          "License :: OSI Approved :: BSD License"
      ]
  )
  
subject: Add classifiers