History of api_url 2 changes

In src/cli/proposal.rs, lines 13–32 on ff1a64f81c1c23dfa03b467649595a81929df3857b4281d1029acc6a825065b1. 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 13,32:src/cli/proposal.rs.