History of topic::proposal 1 change

In crates/hub/src/events.rs, lines 28–30 on 7c572789349b2004593a3119aaaee95c1a4f95d44dd54fbdb7bf69621382c6a7. 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 28,30:crates/hub/src/events.rs.