History of unpack 1 change

In crates/cylinder/src/lib.rs, lines 555–581 on a42f9fb47e372ab21e8cd0ae30848c76d031e43dca3c50d276f33b5ada337605. 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 555,581:crates/cylinder/src/lib.rs.