History of deepen 3 changes

In src/cli/sync.rs, lines 895–917 on 170bb436e1d529fb62a41b18bbccdc0f1deb6dee13e8dec207c6165ab859eb0b. 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 895,917:src/cli/sync.rs.