enabling -fno-warn- (#246).
Fix reading of older Cabal `setup-config`s
Make getSystemLibDir use `GHC.Paths` instead of running `ghc`
Fix tests for Cabal <= 1.16
Print useful information when running spec
Fix warnings
Fix Cabal >= 1.18
Merge pull request #249 from DanielG/dev-cabal1.16

Fix reading setup-config with Cabal <= 1.16
Copy ComponentLocalBuildInfo from Cabal-1.18

This way `configDependencies` works even when the Cabal version used by
cabal-install is later than the one used by ghc-mod.
Merge pull request #250 from DanielG/dev-cabal1.16

Copy ComponentLocalBuildInfo from Cabal-1.18
Add license headers for code copied from Cabal
Copy readMaybe/readEither from base >= 4.7 for backwards compatibility
Merge pull request #251 from DanielG/dev-cabal1.16

Copy readMaybe/readEither from base for backwards compatibility
Add test for no errors case
Suppress empty line
Merge pull request #252 from eagletmt/suppress-empty-line

Suppress empty line
dropping support of GHC 7.2 (#251).
checking if the buffer exists (#256).
fixing a comment.
making ghc-mod-running a global var (##255).