Commit 2023-12-22 20:59 21e45c8b

chore(Set/NAry): drop Set.image3 (#9221) Set.image3 was only used to prove associativity of Set.image2. It had basically no API and had exactly one (easily replaced) use outside Data.Set.NAry). There is no specific function as a replacement, but it can be obtained by combining Set.image2 twice.