History of deepen 3 changes

In src/cli/sync.rs, lines 810–832 on b30a880fa40954c9943ef9c0813c16208a6dc557127248e6e566b55d8ca52b2d. 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 810,832:src/cli/sync.rs.