Focus sizing

A profile's Focus sizing gives the focused tile's column a share of the width, and the tile that share of its column's height; the other columns and rows share the rest equally.

• Golden ratio (0.62, the default when on), Half (0.5) or Two thirds (0.67). Off turns it off where a broader profile has it on.
• It follows focus from tile to tile, a moment after focus settles. Moving within a stack doesn't count.
• A line you drag yourself stays until focus moves to another tile.
• It works with any layout yabai makes, not only columns: Yabar reads the layout from the windows and moves each line between them with yabai's resize.

An app holding a minimum size bigger than its share overlaps its neighbour; focus sizing then leaves that space as it is.