Enable whole module optimization to the project

CryptoSwift.xcodeproj/project.pbxproj

@@ -573,6 +573,7 @@
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_WHOLE_MODULE_OPTIMIZATION = YES;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -611,6 +612,7 @@
 				IPHONEOS_DEPLOYMENT_TARGET = 8.0;
 				METAL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
+				SWIFT_WHOLE_MODULE_OPTIMIZATION = YES;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_PRODUCT = YES;
 				VERSIONING_SYSTEM = "apple-generic";