History of route 2 changes

In crates/flow/src/swarm.rs, lines 624–655 on 42c8e2f4219f132df0776b4e53fa34de3055f3ca2b9d9933a0c1524ff1880894. 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.