History of api_url 2 changes

In src/cli/proposal.rs, lines 13–32 on 87828a0b1f36064f63356114a73cc08f1646ed739d37e1a6e5826b06d6087209. 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.