History of serve 1 change

In crates/flow/src/egress.rs, lines 171–216 on v0.3.0. 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 171,216:crates/flow/src/egress.rs.