History of DirBackend::authorize 3 changes

In crates/oxy-server/src/lib.rs, lines 448–459 on 7a3cc5149a1462290d018fa2b022c6dadfc89ce48dd3222db48712431fcc1ab6. 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 448,459:crates/oxy-server/src/lib.rs.