Removed duplicate Building protocol

.github/workflows/restrict-main.yml

@@ -0,0 +1,17 @@
+name: Restrict main merges
+
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  check-branch:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Ensure PR comes from develop
+        run: |
+          if [ "${{ github.head_ref }}" != "develop" ]; then
+            echo "Only develop can be merged into main."
+            exit 1
+          fi

Sources/ForeFlightKML/Styles/IconStyle.swift

@@ -130,7 +130,7 @@ public enum CustomIconType: Codable {
         "target": .target,
         "square": .square,
         "placemark_square": .placemarksquare,
-        "placemark_circle": .placemarkcircle,
+        "placemark_circle": .placemarkcircle
     ]
 
     public func encode(to encoder: any Encoder) throws {

Sources/ForeFlightKML/Utils/Protocols.swift

@@ -60,7 +60,3 @@ public extension KMLSubStyle {
 protocol Building {
     func build(as format: OutputFormat) throws -> BuildResult
 }
-
-protocol Building {
-    func build(as format: OutputFormat) throws -> BuildResult
-}