Add SWIFT_VERSION to all targets.

CryptoSwift.xcodeproj/project.pbxproj

@@ -1151,6 +1151,7 @@
 				PRODUCT_NAME = CryptoSwift;
 				SDKROOT = watchos;
 				SKIP_INSTALL = YES;
+				SWIFT_VERSION = 3.0;
 				TARGETED_DEVICE_FAMILY = 4;
 				WATCHOS_DEPLOYMENT_TARGET = 2.0;
 			};
@@ -1174,6 +1175,7 @@
 				SDKROOT = watchos;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
+				SWIFT_VERSION = 3.0;
 				TARGETED_DEVICE_FAMILY = 4;
 				WATCHOS_DEPLOYMENT_TARGET = 2.0;
 			};
@@ -1388,6 +1390,7 @@
 				SDKROOT = appletvos;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 3.0;
 				TARGETED_DEVICE_FAMILY = 3;
 				TVOS_DEPLOYMENT_TARGET = 9.0;
 				WATCHOS_DEPLOYMENT_TARGET = 2.0;
@@ -1419,6 +1422,7 @@
 				SKIP_INSTALL = YES;
 				SWIFT_DISABLE_SAFETY_CHECKS = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
+				SWIFT_VERSION = 3.0;
 				TARGETED_DEVICE_FAMILY = 3;
 				TVOS_DEPLOYMENT_TARGET = 9.0;
 				WATCHOS_DEPLOYMENT_TARGET = 2.0;
@@ -1445,6 +1449,7 @@
 				SDKROOT = macosx;
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 3.0;
 			};
 			name = Debug;
 		};
@@ -1472,6 +1477,7 @@
 				SKIP_INSTALL = YES;
 				SWIFT_DISABLE_SAFETY_CHECKS = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Owholemodule";
+				SWIFT_VERSION = 3.0;
 			};
 			name = Release;
 		};