Use latest skylighting (0.3).

pandoc.cabal

@@ -279,7 +279,7 @@ Library
                  tagsoup >= 0.13.7 && < 0.15,
                  base64-bytestring >= 0.1 && < 1.1,
                  zlib >= 0.5 && < 0.7,
-                 skylighting >= 0.2 && < 0.3,
+                 skylighting >= 0.2 && < 0.4,
                  data-default >= 0.4 && < 0.8,
                  temporary >= 1.1 && < 1.3,
                  blaze-html >= 0.5 && < 0.10,
@@ -503,7 +503,7 @@ Test-Suite test-pandoc
                   directory >= 1 && < 1.4,
                   filepath >= 1.1 && < 1.5,
                   process >= 1 && < 1.5,
-                  skylighting >= 0.2 && < 0.3,
+                  skylighting >= 0.2 && < 0.4,
                   Diff >= 0.2 && < 0.4,
                   test-framework >= 0.3 && < 0.9,
                   test-framework-hunit >= 0.2 && < 0.4,

stack.pkg.yaml

@@ -18,5 +18,5 @@ packages:
     commit: 9de619a02f79544bec933e4366a0d2f92ae2fe13
   extra-dep: false
 extra-deps:
-- skylighting-0.2
-resolver: lts-8.0
+- skylighting-0.3
+resolver: lts-8.2

stack.yaml

@@ -8,5 +8,5 @@ flags:
 packages:
 - '.'
 extra-deps:
-- skylighting-0.2
-resolver: lts-8.0
+- skylighting-0.3
+resolver: lts-8.2