History of router 5 changes

In crates/oxy-server/src/lib.rs, lines 339–347 on 3498fb471800c4ae75d9a76cedea289ef4c3db93444ee2099c4804d1ee9f00f1. 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 339,347:crates/oxy-server/src/lib.rs.