History of arrive 2 changes

In crates/backdrop/src/lib.rs, lines 212–230 on 234921ea0834d3a9a813a644f8bcbb6327eb110431606dd668bee168b3b5d3d4. 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 212,230:crates/backdrop/src/lib.rs.