FR: Acme: Zooming a window should retain layout when unfocused

[Superpat]

Right clicking the square at the top of a scrollbar causes the window to hide all other windows in the column. Left clicking the square causes the other windows to reappear.

Unfortunately they all become minimized and reordered underneath the zoomed window and I lose my spatial awareness of where each window is. I think acme should keep in memory the window layout before the zoom and reinstate it after a zoom out.

A good example of this is how tmux(1) handles ctrl-b z