[Feature Request] Add exceptions list for auto-tiling

I would like to add specific windows (by e.g. WM_CLASS) to an exceptions list to exclude them from auto-tiling. It seems some window types are already included by default, but these aren't extensible via the settings and I've found some specific applications where auto-tiling causes problems.

I use a pop-up terminal (specifically, Guake) for much of my work in the shell. Under normal conditions, I have it set to open from the bottom of the screen overlaying the rest of my windows, taking up the full width and ~40% of the vertical height of the monitor. With tiling-shell's auto-tile enabled, it gets tiled like any other window—which is definitely *not* what I want.

Ideally, I would be able to to add a list of exceptions to the auto-tiling (such as by WM_CLASS), with an "eyedrop" picker to pick the windows to add to the exception list.