Move data/emoji.json to emoji.json, add to extra-source-files.

This doesn't really belong in data-files as it's not loaded
dynamically.

COPYRIGHT

@@ -198,7 +198,7 @@ revised by Martin Paul Eve and then John MacFarlane.
 License. Originally by Martin Fenner."
 
 ------------------------------------------------------------------------
-The file data/emoji.json is derived from https://github.com/github/gemoji.
+The file emoji.json is derived from https://github.com/github/gemoji.
 
 Copyright (c) 2019 GitHub, Inc.
 

pandoc.cabal

@@ -189,6 +189,8 @@ extra-source-files:
                  -- files needed to build man page
                  man/manfilter.lua
                  man/pandoc.1.template
+                 -- data files used by TH
+                 emoji.json
                  -- trypandoc
                  trypandoc/Makefile
                  trypandoc/index.html

src/Text/Pandoc/Emoji.hs

@@ -20,7 +20,7 @@ import Text.Pandoc.Definition (Inline (Span, Str))
 import Text.Pandoc.Emoji.TH (genEmojis)
 
 emojis :: M.Map T.Text T.Text
-emojis = M.fromList $(genEmojis "data/emoji.json")
+emojis = M.fromList $(genEmojis "emoji.json")
 
 emojiToInline :: T.Text -> Maybe Inline
 emojiToInline emojikey = makeSpan <$> M.lookup emojikey emojis