History of ago 3 changes

In crates/hub/src/flow.rs, lines 1819–1827 on 06b756358f7e15fa0441184178b46de52dd21e161d43a0dbe337234f0d96db37. 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 1819,1827:crates/hub/src/flow.rs.