History of main 8 changes

In src/main.rs, lines 8–22 on f77698833f9f7577ebc61cfb1f3c4da3a8ff11056f161db0eddfaa1c6de0dee0. 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 8,22:src/main.rs.