History of CasFs::new 1 change

In crates/flow-casfs/src/main.rs, lines 53–84 on 67851a868a3b06eb7cf6dd158a97de532a647c91ce66ba8ec1f1f83be3b8e238. 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 53,84:crates/flow-casfs/src/main.rs.