History of api_url 2 changes

In src/cli/proposal.rs, lines 13–32 on 19303b4a06fbf4b02fded411fc361ffe549c29b7ef535092bc45ce77d4056456. 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.