History of run 4 changes

In src/main.rs, lines 125–361 on 20247a03a59675618c4e8dbd6394d93e9cee5b50e22feef4b590d87e642d613a. 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 125,361:src/main.rs.