editor singleline (#3257)

- Implement Editor::single_line
- Fix confusing error message
- Fix loading keyfiles
- Wire up GoToLine modal
c7f5888348Mikayla Maki committed on 11/7/2023, 7:41:33 PM· committed by GitHubparentsb692fb11e6a0f1
9 files changedLine totals unavailable