History of Sky::instances 3 changes

In crates/backdrop/src/sky.rs, lines 494–511 on 85ec74fd82d8075b2e48d1383547cc3a18886327bb29b28f08c58d8a29929fad. 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 494,511:crates/backdrop/src/sky.rs.