History of route 2 changes

In crates/flow/src/swarm.rs, lines 624–655 on 1e6b9fb1e73fdbe8e22c781af20f6da643afffddf74404f399eb9f925d85b04f. 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 624,655:crates/flow/src/swarm.rs.