v1.0.4

• Add the ability to select an output directory for the chapter XMLs via -d option.
• Advertise the new -d option in the README.
• Small code cleanup by adding more newlines for readability, using f-strings where fit, etc.
• Update the setuptools package information to represent my new GitHub username and author name and email.
• Add 2 bash .sh packaging helper scripts.

Note v1.0.3 never existed. It was accidentally skipped. Whoops...