History of api_url 2 changes

In src/cli/proposal.rs, lines 13–32 on 6a81dbab471d184c699e085848305936b681e8f1cf0ec605191547e17ba57840. 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.