Rework GhcModT monad stack
Add temporary workaround for monad-journal

.. just until upstream uploads the changes to hackage
Clean up Find.hs a bit
Remove ghc-mod.cache files before tests run
Clean up getSymbolTable a bit more
Fix warning
add note
monad-journal fixes are upstream now
Export GhcModError(..)
Add a test making sure pattern match failures on GhcModT work the way I expect
Merge pull request #301 from DanielG/dev

Rework GhcModT Monad stack, begin integrating ErrorT and some cleanups