History of ProposalContentProvider::dispose 1 change

In src/diff.ts, lines 56–58 on 1cc0ff44e5ca78b9abfb50f6c09a66f35f3575423f9bc5a3de2d0d2e139fb712. 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 56,58:src/diff.ts.