History of ago 3 changes

In crates/hub/src/flow.rs, lines 1844–1852 on v0.9.7. 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 1844,1852:crates/hub/src/flow.rs.