Fix Godot CLI arguments to use --headless everywhere (#113)

- Use long-form `--verbose` and `--editor` for better readability.

.github/workflows/godot-ci.yml

@@ -5,7 +5,7 @@ env:
   GODOT_VERSION: 3.3.4
   EXPORT_NAME: test-project
   PROJECT_PATH: test-project
-  
+
 jobs:
   export-windows:
     name: Windows Export
@@ -25,7 +25,7 @@ jobs:
         run: |
           mkdir -v -p build/windows
           cd $PROJECT_PATH
-          godot -v --export "Windows Desktop" ../build/windows/$EXPORT_NAME.exe
+          godot --headless --verbose --export-release "Windows Desktop" ../build/windows/$EXPORT_NAME.exe
       - name: Upload Artifact
         uses: actions/upload-artifact@v1
         with:
@@ -50,7 +50,7 @@ jobs:
         run: |
           mkdir -v -p build/linux
           cd $PROJECT_PATH
-          godot -v --export "Linux/X11" ../build/linux/$EXPORT_NAME.x86_64
+          godot --headless --verbose --export-release "Linux/X11" ../build/linux/$EXPORT_NAME.x86_64
       - name: Upload Artifact
         uses: actions/upload-artifact@v1
         with:
@@ -75,7 +75,7 @@ jobs:
         run: |
           mkdir -v -p build/web
           cd $PROJECT_PATH
-          godot -v --export "HTML5" ../build/web/index.html
+          godot --headless --verbose --export-release "HTML5" ../build/web/index.html
       - name: Upload Artifact
         uses: actions/upload-artifact@v1
         with:
@@ -108,7 +108,7 @@ jobs:
         run: |
           mkdir -v -p build/mac
           cd $PROJECT_PATH
-          godot -v --export "Mac OSX" ../build/mac/$EXPORT_NAME.zip
+          godot --headless --verbose --export-release "Mac OSX" ../build/mac/$EXPORT_NAME.zip
       - name: Upload Artifact
         uses: actions/upload-artifact@v1
         with: