History of Throttle::wait 1 change

In crates/hub/src/throttle.rs, lines 74–81 on v0.9.20. 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 74,81:crates/hub/src/throttle.rs.