History of Sky::label 2 changes

In crates/backdrop/src/sky.rs, lines 543–554 on d7e2c27548078f2ce2a76373feabfe92c097ba0cedb6d6ed76a0e1f4d204f57a. 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.