History of api_url 2 changes

In src/cli/proposal.rs, lines 13–32 on 569802ebae0e3bfafda3eecd7042043c5465f609240efcd9c44be88190ca5d07. 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.