History of deepen 3 changes

In src/cli/sync.rs, lines 848–870 on 1e0fbb47ab9095d74947be7214dd0099540961dbd6eb564687669439a873c0ba. 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 848,870:src/cli/sync.rs.