Upgrade target version

Demo/Kingfisher-Demo.xcodeproj/project.pbxproj

@@ -959,16 +959,16 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
-				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				IPHONEOS_DEPLOYMENT_TARGET = 12.1;
+				MACOSX_DEPLOYMENT_TARGET = 10.14;
 				MTL_ENABLE_DEBUG_INFO = YES;
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
-				TVOS_DEPLOYMENT_TARGET = 11.0;
-				WATCHOS_DEPLOYMENT_TARGET = 4.0;
+				TVOS_DEPLOYMENT_TARGET = 12.1;
+				WATCHOS_DEPLOYMENT_TARGET = 5.0;
 			};
 			name = Debug;
 		};
@@ -1013,16 +1013,16 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
-				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				IPHONEOS_DEPLOYMENT_TARGET = 12.1;
+				MACOSX_DEPLOYMENT_TARGET = 10.14;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2";
-				TVOS_DEPLOYMENT_TARGET = 11.0;
+				TVOS_DEPLOYMENT_TARGET = 12.1;
 				VALIDATE_PRODUCT = YES;
-				WATCHOS_DEPLOYMENT_TARGET = 4.0;
+				WATCHOS_DEPLOYMENT_TARGET = 5.0;
 			};
 			name = Release;
 		};

Kingfisher.xcodeproj/project.pbxproj

@@ -961,9 +961,9 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 12.1;
 				LD_DYLIB_INSTALL_NAME = "@rpath";
-				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				MACOSX_DEPLOYMENT_TARGET = 10.14;
 				ONLY_ACTIVE_ARCH = YES;
 				PRODUCT_BUNDLE_PACKAGE_TYPE = BNDL;
 				SDKROOT = "";
@@ -972,8 +972,8 @@
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2,3,4";
-				TVOS_DEPLOYMENT_TARGET = 11.0;
-				WATCHOS_DEPLOYMENT_TARGET = 4.0;
+				TVOS_DEPLOYMENT_TARGET = 12.1;
+				WATCHOS_DEPLOYMENT_TARGET = 5.0;
 			};
 			name = Debug;
 		};
@@ -1017,9 +1017,9 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 11.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 12.1;
 				LD_DYLIB_INSTALL_NAME = "@rpath";
-				MACOSX_DEPLOYMENT_TARGET = 10.13;
+				MACOSX_DEPLOYMENT_TARGET = 10.14;
 				PRODUCT_BUNDLE_PACKAGE_TYPE = BNDL;
 				SDKROOT = "";
 				SUPPORTED_PLATFORMS = "watchsimulator iphonesimulator appletvsimulator watchos appletvos iphoneos macosx";
@@ -1027,8 +1027,8 @@
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
 				SWIFT_VERSION = 5.0;
 				TARGETED_DEVICE_FAMILY = "1,2,3,4";
-				TVOS_DEPLOYMENT_TARGET = 11.0;
-				WATCHOS_DEPLOYMENT_TARGET = 4.0;
+				TVOS_DEPLOYMENT_TARGET = 12.1;
+				WATCHOS_DEPLOYMENT_TARGET = 5.0;
 			};
 			name = Release;
 		};

Package.swift

@@ -3,7 +3,7 @@ import PackageDescription
 
 let package = Package(
     name: "Kingfisher",
-    platforms: [.iOS(.v10), .macOS(.v10_12), .tvOS(.v10), .watchOS(.v3)],
+    platforms: [.iOS(.v12), .macOS(.v10_14), .tvOS(.v12), .watchOS(.v5)],
     products: [
         .library(name: "Kingfisher", targets: ["Kingfisher"])
     ],

Sources/Image/ImageDrawing.swift

@@ -590,7 +590,7 @@ extension KingfisherWrapper where Base: KFCrossPlatformImage {
         return KingfisherWrapper.image(cgImage: cgImage, scale: targetScale, refImage: ref)
         #else
         
-        let format = UIGraphicsImageRendererFormat.default()
+        let format = UIGraphicsImageRendererFormat.preferred()
         format.scale = scale ?? self.scale
         let renderer = UIGraphicsImageRenderer(size: size, format: format)