History of kernel 1 change

In crates/flow/src/facts.rs, lines 27–36 on 412808f9f76943fa503d58ab9a24fb477121f64dc5eb29a05cd2036526ebdf67. 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 27,36:crates/flow/src/facts.rs.