History of ReferenceIndex::indexOf 1 change

In src/references.ts, lines 54–81 on f902d5b8bfeb39c9a8921b8ed783eb26dbdf9665b94d3ad9d4b1a0c40e01d593. 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.