Update to Swift 5.

Author: lucdion

Example/PinLayoutSample.xcodeproj/project.pbxproj

@@ -510,7 +510,7 @@
 				TargetAttributes = {
 					249EFE3E1E64FAFE00165E39 = {
 						CreatedOnToolsVersion = 8.2.1;
-						LastSwiftMigration = 1000;
+						LastSwiftMigration = 1030;
 						ProvisioningStyle = Automatic;
 					};
 				};
@@ -845,7 +845,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "PinLayoutSample/UI/Examples/PinLayoutSample-Bridging-Header.h";
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -862,7 +862,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = com.layoutbox.PinLayoutSample;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SWIFT_OBJC_BRIDGING_HEADER = "PinLayoutSample/UI/Examples/PinLayoutSample-Bridging-Header.h";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};

PinLayout.xcodeproj/project.pbxproj

@@ -651,13 +651,13 @@
 					};
 					249EFE791E64FB4C00165E39 = {
 						CreatedOnToolsVersion = 8.2.1;
-						LastSwiftMigration = 1000;
+						LastSwiftMigration = 1030;
 						ProvisioningStyle = Automatic;
 					};
 					249EFE821E64FB4C00165E39 = {
 						CreatedOnToolsVersion = 8.2.1;
 						DevelopmentTeam = 4Q596JWQC5;
-						LastSwiftMigration = 1000;
+						LastSwiftMigration = 1030;
 						ProvisioningStyle = Automatic;
 					};
 					DF1A5D1C2084C94700725EF5 = {
@@ -1247,7 +1247,7 @@
 				PRODUCT_NAME = PinLayout;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -1267,7 +1267,7 @@
 				PRODUCT_BUNDLE_IDENTIFIER = "com.mirego.PinLayout-iOS";
 				PRODUCT_NAME = PinLayout;
 				SKIP_INSTALL = YES;
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -1282,7 +1282,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.mirego.PinLayoutTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -1297,7 +1297,7 @@
 				LD_RUNPATH_SEARCH_PATHS = "$(inherited) @executable_path/Frameworks @loader_path/Frameworks";
 				PRODUCT_BUNDLE_IDENTIFIER = com.mirego.PinLayoutTests;
 				PRODUCT_NAME = "$(TARGET_NAME)";
-				SWIFT_VERSION = 4.2;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};

Tests/UIImage+Color.swift

@@ -20,7 +20,7 @@
 import UIKit
 
 public extension UIImage {
-    public convenience init?(color: UIColor, size: CGSize = CGSize(width: 1, height: 1)) {
+    convenience init?(color: UIColor, size: CGSize = CGSize(width: 1, height: 1)) {
         let rect = CGRect(origin: .zero, size: size)
         UIGraphicsBeginImageContextWithOptions(rect.size, false, 0.0)
         color.setFill()