Switch to new pandoc-types and use Text instead of String [API change].

PR #5884.

+ Use pandoc-types 1.20 and texmath 0.12.
+ Text is now used instead of String, with a few exceptions.
+ In the MediaBag module, some of the types using Strings
  were switched to use FilePath instead (not Text).
+ In the Parsing module, new parsers `manyChar`, `many1Char`,
  `manyTillChar`, `many1TillChar`, `many1Till`, `manyUntil`,
  `mantyUntilChar` have been added: these are like their
  unsuffixed counterparts but pack some or all of their output.
+ `glob` in Text.Pandoc.Class still takes String since it seems
  to be intended as an interface to Glob, which uses strings.
  It seems to be used only once in the package, in the EPUB writer,
  so that is not hard to change.

1 files changed, 2 insertions, 1 deletions

diff --git a/test/Tests/Readers/Docx.hs b/test/Tests/Readers/Docx.hs
index e107ff9ee..bc036e0cc 100644
--- a/test/Tests/Readers/Docx.hs
+++ b/test/Tests/Readers/Docx.hs
@@ -1,4 +1,5 @@
 {-# LANGUAGE NoImplicitPrelude #-}
+{-# LANGUAGE OverloadedStrings #-}
 {- |
    Module      : Tests.Readers.Docx
    Copyright   : © 2017-2019 Jesse Rosenthal, John MacFarlane
@@ -79,7 +80,7 @@ testForWarningsWithOptsIO opts name docxFile expected = do
   df <- B.readFile docxFile
   logs <-  runIOorExplode $ setVerbosity ERROR >> readDocx opts df >> P.getLog
   let warns = [m | DocxParserWarning m <- logs]
-  return $ test id name (unlines warns, unlines expected)
+  return $ test id name (T.unlines warns, unlines expected)
 
 testForWarningsWithOpts :: ReaderOptions -> String -> FilePath -> [String] -> TestTree
 testForWarningsWithOpts opts name docxFile expected =