History of Ripples::layout 2 changes

In crates/backdrop/src/ripples.rs, lines 100–124 on draft-ready. 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 100,124:crates/backdrop/src/ripples.rs.