Random cleanup PR

[john-science]

This is a grab-bag PR. But again, it's all just little things:

• Bump the version number of the project... because you have done so much work!
  • Though, I guess we could just wait for you to be done and call it 2.0.0.
• Removed pylintrc because it's unused. (We use black and ruff.)
• Removed CHANGES.md, because it was never used in the first place.
• Removed /doc/, because it is empty and unused. (Though...maybe one day!)
• Added my usual list to the .gitignore. This is one place where I think "more is more".