A compatibility package for the Foldable1 and Bifoldable1 type classes,
which were introduced in base-4.18.0.0 (GHC 9.6.1). For more information,
see <https://github.com/haskell/core-libraries-committee/issues/9 this Core
Libraries Committee proposal>.

Foldable1 and Bifoldable1 classify non-empty data structures that can be
folded to a summary value.