Checking to see if you're still doing this, or if I should start a new one

Pull request that cleans up some of the markup in the earlier files, plus fixes a table of contents a little for the early pages and the first section of Chapter 1.

If you're not interested in maintaining this, I'll start a new repo based off of Sigil files for producing the ePub. It's a little easier to edit, that way, but if you want to keep maintaining it, I'll work with yours.