History of milestone 2 changes

In crates/oh/src/main.rs, lines 1902–1951 on 5714347a62336e67d4918ac400276b2972ac95c172f4e0bd9bf54c93b978c728. 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 1902,1951:crates/oh/src/main.rs.