History of to_hex 1 change

In src/cli/approve.rs, lines 37–39 on d3b270909c7868793963ef2e081f34998da051fda4f9b3abe1ffe30fdffe5e20. 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 37,39:src/cli/approve.rs.