History of announce 2 changes

In crates/hub/src/swarm.rs, lines 105–134 on f993f792537e56020d40e4b598c6c384c78b10e529f307f77ef0d1304d36f68a. 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.