History of Sky::label 2 changes

In crates/backdrop/src/sky.rs, lines 543–554 on 3b1bc27fe805521f486e8fc71d528404f354ed1c899c2fb2fef039ac7b0896cf. 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.