old_contents: from setuptools import setup
  
  setup(
   name="molecupy",
   version="2.0.0",
   description="A Python molecular modeller with PDB parsing.",
   url="https://molecupy.readthedocs.io",
   author="Sam Ireland",
   author_email="mail@samireland.com",
   license="MIT",
   classifiers=[
    "Development Status :: 4 - Beta",
    "Intended Audience :: Science/Research",
    "License :: OSI Approved :: MIT License",
    "Topic :: Scientific/Engineering :: Chemistry",
    "Programming Language :: Python :: 3",
    "Programming Language :: Python :: 3.0",
    "Programming Language :: Python :: 3.1",
    "Programming Language :: Python :: 3.2",
    "Programming Language :: Python :: 3.3",
    "Programming Language :: Python :: 3.4",
    "Programming Language :: Python :: 3.5",
   ],
   keywords="chemistry bioinformatics proteins biochemistry molecules",
   packages=["molecupy", "molecupy.structures"],
   install_requires=["requests", "omnicanvas"]
  )
  
new_contents: from setuptools import setup
  
  setup(
   name="molecupy",
   version="2.0.0",
   description="A Python molecular modeller with PDB parsing.",
   url="https://molecupy.readthedocs.io",
   author="Sam Ireland",
   author_email="mail@samireland.com",
   license="MIT",
   classifiers=[
    "Development Status :: 4 - Beta",
    "Intended Audience :: Science/Research",
    "License :: OSI Approved :: MIT License",
    "Topic :: Scientific/Engineering :: Chemistry",
    "Programming Language :: Python :: 3",
    "Programming Language :: Python :: 3.0",
    "Programming Language :: Python :: 3.1",
    "Programming Language :: Python :: 3.2",
    "Programming Language :: Python :: 3.3",
    "Programming Language :: Python :: 3.4",
    "Programming Language :: Python :: 3.5",
   ],
   keywords="chemistry bioinformatics proteins biochemistry molecules",
   packages=["molecupy", "molecupy.structures", "molecupy.pdb"],
   install_requires=["requests", "omnicanvas"]
  )
  
subject: Add pdb subpackage to setup.py