Allow Stack to build the project and run the test suite

What?
=====

This bumps Stack dependencies and locks certain packages to ensure a
proper build.

src/Unused/Regex.hs

@@ -9,5 +9,5 @@ import Text.Regex.TDFA
 matchRegex :: String -> String -> Bool
 matchRegex = matchTest . stringToRegex
 
-stringToRegex :: RegexMaker Regex CompOption ExecOption String => String -> Regex
+stringToRegex :: String -> Regex
 stringToRegex = makeRegex

stack.yaml

@@ -2,25 +2,20 @@
 # For more information, see: http://docs.haskellstack.org/en/stable/yaml_configuration/
 
 # Specifies the GHC version and set of packages available (e.g., lts-3.5, nightly-2015-09-21, ghc-7.10.2)
-resolver: lts-6.0
+resolver: lts-11.0
 
 # Local packages, usually specified by relative directory name
 packages:
 - '.'
 # Packages to be pulled from upstream that are not in the resolver (e.g., acme-missiles-0.3)
 extra-deps:
-- aeson-0.11.2.1
-- call-stack-0.1.0
 - cassava-0.4.5.1
-- hspec-2.3.2
-- hspec-core-2.3.2
-- hspec-discover-2.3.2
-- hspec-expectations-0.8.2
+- hspec-2.5.0
+- hspec-core-2.5.0
+- hspec-discover-2.5.0
 - inflections-0.3.0.0
-- integer-logarithms-1
-- megaparsec-5.1.2
-- mmorph-1.0.9
-- scientific-0.3.4.10
+- megaparsec-5.3.1
+- terminal-progress-bar-0.1.1.1
 
 # Override default flag values for local packages and extra-deps
 flags: {}

unused.cabal

@@ -67,7 +67,7 @@ library
                      , filepath
                      , directory
                      , regex-tdfa
-                     , terminal-progress-bar
+                     , terminal-progress-bar >= 0.1.1.1 && < 0.1.2
                      , ansi-terminal
                      , unix
                      , parallel-io
@@ -117,6 +117,7 @@ test-suite unused-test
                      , Unused.UtilSpec
                      , Unused.Cache.FindArgsFromIgnoredPathsSpec
                      , Unused.AliasesSpec
+                     , Unused.ProjectionSpec
   ghc-options:         -threaded -rtsopts -with-rtsopts=-N -Wall
   default-language:    Haskell2010
   default-extensions:  OverloadedStrings