Merge branch 'surface-patch-types-in-split-diffs' into ruby

src/Split.hs

@@ -90,6 +90,7 @@ split diff (beforeBlob, afterBlob) = renderHtml
 
 -- | A patch to only one side of a diff.
 data SplitPatch a = SplitInsert a | SplitDelete a | SplitReplace a
+  deriving (Show, Eq)
 
 -- | A diff with only one side’s annotations.
 type SplitDiff leaf annotation = Free (Annotated leaf annotation) (SplitPatch (Term leaf annotation))