Add 'users/glittershark/xanthous/' from commit '53b56744f4'

git-subtree-dir: users/glittershark/xanthous
git-subtree-mainline: 91f53f02d8
git-subtree-split: 53b56744f4

users/glittershark/xanthous/src/Xanthous/Util/Inflection.hs

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+
+module Xanthous.Util.Inflection
+  ( toSentence
+  ) where
+
+import Xanthous.Prelude
+
+toSentence :: (MonoFoldable mono, Element mono ~ Text) => mono -> Text
+toSentence xs = case reverse . toList $ xs of
+  [] -> ""
+  [x] -> x
+  [b, a] -> a <> " and " <> b
+  (final : butlast) ->
+    intercalate ", " (reverse butlast) <> ", and " <> final