History of heading 1 change

In src/cli/ui.rs, lines 55–57 on af5bd4e6c6b269a5bf018d063a18f39a7829201fe03d451b309ac3a919689204. 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 55,57:src/cli/ui.rs.