History of deepen 3 changes

In src/cli/sync.rs, lines 810–832 on e226a6cc2f713b7b3f71469ba12d5dcb5543e151909a781928f90a4ae8df95e6. 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.