History of api_url 2 changes

In src/cli/proposal.rs, lines 13–32 on da652d6392d8d2b8959516144f771bab744a13ec5395bf06d5535b0c37cb1c25. 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.