History of deepen 3 changes

In src/cli/sync.rs, lines 848–870 on 30d5fac7560dea15f032e006ddd6d00a693ff81a8b1eb33875be65836fee74c2. 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.