History of main 9 changes

In src/main.rs, lines 8–23 on 2b668d92b066f07d2f01a54e49ce18746e4a97128653e22ddf9fd423959df76d+4224eb6b4488161cc368dd76e58c9584376ea608f4d3f124412bce6a8e146318+ba1731bba53083a9a40dc52110c01a7cfc5b9721c587cfe3807e3270d28c8987. 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 8,23:src/main.rs.