Create a format standard

[phrohdoh]

The format standard for this book should be in an in-tree document.

These bullet points are some of the rules I have generally tried to follow so far and believe we should follow going forward. There are undoubtedly more that I can not think of right now.

• generally 80 columns per line max, with some exceptions:

  • if a single char of punctuation goes over 80 that's fine
  • avoid orphans if at all possible
  • ...

• links should go at the bottom of the document (see the current README.md as an example)