History of announce 2 changes

In crates/hub/src/swarm.rs, lines 105–134 on e71583501b1d28e733327b161531c4e6899cdf30605e7dfa27dc6b32733b98ba. 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.