History of Sky::layout 3 changes

In crates/backdrop/src/sky.rs, lines 304–343 on b349e15a3eab6ff9436d9e4d39833a98fe7d3217bf79a7b77b72a3dad658d6fe. Every change that wrote or deleted one of these lines, or deleted a line from between them. Exact, because each line keeps its identity across edits; edits elsewhere in the file are not here. Also: oxy log -L 304,343:crates/backdrop/src/sky.rs.