Rob Berry 06fe8a043f Add hdevtools linter for haskell
This adds support for the hdevtools haskell linter
https://github.com/hdevtools/hdevtools

The output for hdevtools is near identical to the ghc output so this
also extracts the ghc handler into the handle file and adds tests

* Add testing for previous major release of ghc
2017-02-17 17:18:38 +00:00
..
2017-02-17 17:18:38 +00:00
2017-02-17 17:18:38 +00:00