History of Scene::arrive 1 change

In crates/backdrop/src/scene.rs, lines 21–21 on 4c77a1c8aad8799227421360bab76001757ca9fe11cf66324a7d1e6997ef6b7b. 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 21,21:crates/backdrop/src/scene.rs.