Thanks a lot! Some of that will probably remain a bit fuzzy to me until I've actually done it myself, but the little hints you threw in there are exactly what I was looking for (especially since I saw another user's submission page warning people not to download his files because something about his deployment attempt didn't quite jive with something that itch.io was expecting, so he was going to have to make a new upload). And now I'd better get back to work! ;-)