Windows build: create pandoc-citeproc on appveyor, so we can put in msi.

Updated stackage resolver.

appveyor.yml

@@ -25,13 +25,14 @@ before_test:
   # set PATH to where the hsb2hs binary is copied to
   - cmd: set "PATH=%PATH%;%APPDATA%\\local\\bin"
   - stack install hsb2hs
-
+  # we'll need this to create the MSI
+  - git clone https://github.com/jgm/pandoc-citeproc
 
 test_script:
   # The ugly echo "" hack is to avoid complaints about 0 being an invalid file
   # descriptor
   - echo "" | stack --no-terminal  test
-  - echo "" | stack --local-bin-path . install pandoc
+  - echo "" | stack --local-bin-path . install pandoc pandoc-citeproc
 
 after_test:
     # .\ in the stack commandline seems to be .\windows\ (where the stack-appveyor.yaml is)

windows/stack.yaml

@@ -15,9 +15,6 @@ flags:
     network-uri: true
 packages:
 - '..'
-- '../../pandoc-citeproc'
+- '../pandoc-citeproc'
 extra-deps:
-- 'aeson-0.11.1.1'
-- 'texmath-0.8.5'
-- 'highlighting-kate-0.6.2'
-resolver: lts-5.8
+resolver: lts-6.1