History of ReferenceIndex::indexOf 1 change

In src/references.ts, lines 54–81 on 426ddc5039b50be714335419d8b8f1416740e27644c365b0a26e714d186bb46c. 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 54,81:src/references.ts.