History of Engine::now 1 change

In crates/backdrop/src/lib.rs, lines 60–62 on 4cc40ccc603474d774ca8dd90027e1728740d3c64a3d352e02bdb7e0c03e6e68. 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 60,62:crates/backdrop/src/lib.rs.