History of api_url 2 changes

In src/cli/proposal.rs, lines 13–32 on 93e7f1d9ef1c7ce594fda04528f39b4129f058eecccf752a90f0ce77072a0810. 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.