Chapter Numbers are not Correct

[kennethshsu]

There's a "heading" chapter number, and the actual chapter number, they are redundant, and they also don't match.

[genedan]

I'm moving the preface to Chapter 1 so the numbering lines up. We can figure out how to compile the preface as we refine the draft.

[genedan]

It looks like the features that would make adding a preface/appendix straightforward are open issues in the Sphinx project:

sphinx-doc/sphinx#6614
sphinx-doc/sphinx#2502

Unfortunately without this, it may be very tricky to get the preface in there. It might be doable via lower-level LaTeX customization:

https://www.sphinx-doc.org/en/master/latex.html