History of deepen 2 changes

In src/cli/sync.rs, lines 730–752 on cd19603782bf31822efb1f3cf2bf965f8ce71daef9d317a2a9091ac27559990f. 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 730,752:src/cli/sync.rs.