History of release 2 changes

In crates/oh/src/main.rs, lines 1656–1747 on d4a0043fded4b0533c2f0377373bce57e38279a2b3935cdc62be08123505630b. 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 1656,1747:crates/oh/src/main.rs.