History of api_url 2 changes

In src/cli/proposal.rs, lines 13–32 on bf0247ee3590fb9049d7f49b8c382753df9151d16636667a9f3a15cf7f9fff0f. 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.