Moves to stackage lts-5.

.travis.yml

@@ -17,6 +17,7 @@ env:
 - ARGS="--resolver lts-2"
 - ARGS="--resolver lts-3"
 - ARGS="--resolver lts-4"
+- ARGS="--resolver lts-5"
 - ARGS="--resolver lts"
 - ARGS="--resolver nightly"
 

stack.yaml

@@ -1,7 +1,7 @@
 # For more information, see: https://github.com/commercialhaskell/stack/blob/master/doc/yaml_configuration.md
 
 # Specifies the GHC version and set of packages available (e.g., lts-3.5, nightly-2015-09-21, ghc-7.10.2)
-resolver: lts-3.20
+resolver: lts-5.0
 
 # Local packages, usually specified by relative directory name
 packages: