fix: swift package compatibility

Author: dlindenkreuz

Package.swift

@@ -1,13 +1,19 @@
-// swift-tools-version:5.1
+// swift-tools-version:5.0
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 import PackageDescription
 
 let package = Package(
     name: "DeepDiff",
+    platforms: [
+        .macOS(.v10_11),
+        .iOS(.v8),
+        .tvOS(.v11),
+        .watchOS(.v3)
+    ],
     products: [
-        .library(name: "DeepDiff", targets: ["DeepDiff"])
+        .library(name: "DeepDiff", targets: ["DeepDiff"]),
     ],
     targets: [
-        .target( name: "DeepDiff", dependencies: [])
+        .target(name: "DeepDiff", path: "Sources")
     ]
 )

Sources/iOS/IndexPathConverter.swift

@@ -6,6 +6,7 @@
 //  Copyright © 2018 Khoa Pham. All rights reserved.
 //
 
+#if os(iOS) || os(tvOS)
 import Foundation
 
 public struct ChangeWithIndexPath {
@@ -58,3 +59,4 @@ extension Int {
     return IndexPath(item: self, section: section)
   }
 }
+#endif

Sources/iOS/UICollectionView+Extensions.swift

@@ -6,6 +6,7 @@
 //  Copyright © 2018 Khoa Pham. All rights reserved.
 //
 
+#if os(iOS) || os(tvOS)
 import UIKit
 
 public extension UICollectionView {
@@ -60,4 +61,4 @@ public extension UICollectionView {
     }
   }
 }
-
+#endif

Sources/iOS/UITableView+Extensions.swift

@@ -6,6 +6,7 @@
 //  Copyright © 2018 Khoa Pham. All rights reserved.
 //
 
+#if os(iOS) || os(tvOS)
 import UIKit
 
 public extension UITableView {
@@ -91,3 +92,4 @@ public extension UITableView {
     }
   }
 }
+#endif