History of announce 2 changes

In crates/hub/src/swarm.rs, lines 105–134 on b9b74d997cecc19ad363184695f1a78118182c4d774906efbee092d671bfc54f. 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 105,134:crates/hub/src/swarm.rs.