History of Sky::label 2 changes

In crates/backdrop/src/sky.rs, lines 543–554 on 0024ccb1b05029300c29ddf888be7513897fa381fc0e0e7b8661e3f00229d460. 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 543,554:crates/backdrop/src/sky.rs.