History of DirBackend::open 2 changes

In crates/oxy-server/src/lib.rs, lines 339–348 on v0.2.0. 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 339,348:crates/oxy-server/src/lib.rs.