History of unpack 1 change

In crates/cylinder/src/lib.rs, lines 555–581 on 2f0b4b0651ea3b534a83ef0c851ec3be69430d6e959e3b9ec6eb38b34eb7a12e. 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.