History of main 8 changes

In src/main.rs, lines 8–22 on 8d6cf1f236944bd170021f69e38430235045d604941dc4aff5814a6feeadea7e. 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.