Windowlogging-type functionality?

[RedstoneParadox]

Windowlogging is a Forge mod that allows you to place glass panes (and presumably bars but I haven't tested them) inside slabs and stairs; it would be cool to see that functionality either in this mod or an add-on.

[Andrew6rant]

I won't implement windowlogging functionality in AutoSlabs, but I was thinking of extending my mixed-slabs branch into a "multiple blocks in once space" API, which would support windowlogging.