I had a cold, so it was dicey there for a while. I thought I might have to postpone Page 13 a day or two, but I made it! The pages are up.
Edge animate released an update that I finally figured out how to download. It comes with responsive scaling now, so I don’t have to borrow Sarah Justine’s open code any more. It works a bit nicer now, with an option to scale both width and height to fit various screens. I plan to retrofit old pages with the new scaling.