History of api 2 changes

In src/cli/human.rs, lines 21–23 on f4b3e9369e287036e7cd232facc3a45063fa19990b0e096334a1e1f1ee5fafd8. 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 21,23:src/cli/human.rs.