haskell-src-exts.cabal: convert tabs to spaces
Support -XDataKinds
Support -XExplicitNamespaces
Failing tests for whitespace, unpack pagmas
accept QuasiQuoter top-level splices without -XTemplateHaskell
modify constraint kinds (failing) test for ghc
Merge pull request #58
Fix haddocks

Haddock doesn't support docs attached to constructor fields
QuasiQuoteToplevel fails the roundtrip test