Update to Swift 4

Author: JagCesar

CloudKitCurrentUser.xcodeproj/project.pbxproj

@@ -247,6 +247,7 @@
 					};
 					FC1B22A71EA56A8400A17879 = {
 						CreatedOnToolsVersion = 8.2.1;
+						LastSwiftMigration = 0940;
 						ProvisioningStyle = Automatic;
 					};
 					FC1B22B61EA56AA900A17879 = {
@@ -255,7 +256,7 @@
 					};
 					FC1D26A51DF21BAD005049CA = {
 						CreatedOnToolsVersion = 8.1;
-						LastSwiftMigration = 0810;
+						LastSwiftMigration = 0940;
 						ProvisioningStyle = Manual;
 					};
 				};
@@ -422,7 +423,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "se.jagcesar.CloudKitCurrentUser-iOS-Tests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -435,7 +436,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = "se.jagcesar.CloudKitCurrentUser-iOS-Tests";
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};
@@ -607,7 +608,7 @@
 				PRODUCT_NAME = CloudKitCurrentUser;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Debug;
 		};
@@ -629,7 +630,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = se.jagcesar.CloudKitCurrentUser;
 				PRODUCT_NAME = CloudKitCurrentUser;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 3.0;
+				SWIFT_VERSION = 4.0;
 			};
 			name = Release;
 		};