I intend to! And to wrap it in a gem; I’ve got it partly there, but it’s a currently a mess as I ran into a bunch of “oh that didn’t actually work” problems at various points. I’ll post a link later…

Edit: Ach, sorry - it's going to be awhile, when I went to roll my own I did it inside my project, so it's not even close to being available as a gem :/