This is another personal victory post of sorts. As promised in yesterday's announcement about the form summaries documentation, I have completed the updated TAPIr documentation. It took another good several hours of testing, development, code commenting, and writing to produce what's there. I know it won't be perfect, but I hope it's a good start for module developers who have been interacting with TAPIr tables in the Ubercart core. If there are any questions as you migrate and work on your modules, don't hesitate to post them in this thread! I'll update the documentation accordingly.
Next on the chopping block, the new conditional actions UI.