Merge pull request #2021 from dagar/appveyor

That was easy.
Merging

.appveyor.yml

 
 environment:
   matrix:
-  - BUILD: 'Release'
-    CONFIG: installer
   - BUILD: 'Debug'
     CONFIG: debug
+  - BUILD: 'Release'
+    CONFIG: installer
 
 install:
   - git submodule update --init --recursive
@@ -42,4 +42,4 @@ deploy:
     prerelease: false
     on:
       CONFIG: installer
-      appveyor_repo_tag: true
\ No newline at end of file
+      appveyor_repo_tag: true