Add instance Foldable1 for upcoming base-4.18 #118
Description
Non-empty vectors can have instance Foldable1, see https://ghc.gitlab.haskell.org/ghc/doc/libraries/base-4.18.0.0/Data-Foldable1.html.
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Non-empty vectors can have instance Foldable1, see https://ghc.gitlab.haskell.org/ghc/doc/libraries/base-4.18.0.0/Data-Foldable1.html.