Most of the content was previously published as articles here, and what I had been doing is a cleanup of text, and putting the sections together. I am now doing an editing pass where I am mainly eliminating topics that crop up in other places. Since I do not want to go "here's an article I published last month, with three paragraphs removed!" output here will be fairly low.
The text was fairly easy to write, and I hope it is easy to read. The hope is that this means that the next editing steps will be relatively painless. I simplified the formatting - no equations, nor footnotes/endnotes, so that final publication formatting is easier.
I might be organised and attempt to do a simultaneous release of all editions. This would add up to an extra month, but it means that I am not stuck in a position where the Kindle version is out much earlier than the paperback.
(c) Brian Romanchuk 2020