hsc2hs 0.68.6

 - Supports generation of response files to avoid system filepath
   limits (#22, #23)

 - Fix non-deterministic failures for response file handlings (#29)

 - Temporary file removals on Windows are not a bit more reliable and should
   throw less access denied errors.  See #25 and
   ([#9775](https://gitlab.haskell.org/ghc/ghc/issues/9775))

 - Accept a leading single quote for data constructor promotion (#13, #17)

 - Support `MonadFail` / base-4.13

 - Include template file as first header in hsc2hs generated C file (#28)

 - On Windows define `__USE_MINGW_ANSI_STDIO` to 1 instead of 0 when not already
   defined in standard template header.  This is a more modern default (#28)
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