History of main 10 changes

In src/main.rs, lines 12–29 on 8fd78eb52ad2aaac80470949fa2b6bbe79ef04a19c14b830eae56d0adcfb1f71+e4595038502a2a70b39cedbd575a9282e6ee2a50bc147b094f8f35d8519fa6d6. 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 12,29:src/main.rs.