History of main 10 changes

In src/main.rs, lines 12–29 on 5b1114a049057de07d38c50a401abbd4893bd1babc3bd97e068315fbf15bd6dd+d443639bcf35254060952ddc1838a83bae5b1f99857703acdab5e2423dfbfdae+ff0af1ee299d64b3ca59b3a9f70da9645e199e3e13c338c2c29a4fb300939220. 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.