History of deepen 3 changes

In src/cli/sync.rs, lines 848–870 on d45dab0484eadd0d03432e03b51d6b71c144e7a27e0c978fd7cdc8bace414c50. 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.