History of DirBackend::authorize 3 changes

In crates/oxy-server/src/lib.rs, lines 394–405 on v0.5.0. 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 394,405:crates/oxy-server/src/lib.rs.