Update to XCode 10

rotate.xcodeproj/project.pbxproj

@@ -113,10 +113,11 @@
 			};
 			buildConfigurationList = 0E9E98AF1BBC8A02004FFE25 /* Build configuration list for PBXProject "rotate" */;
 			compatibilityVersion = "Xcode 3.2";
-			developmentRegion = English;
+			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
 				en,
+				Base,
 			);
 			mainGroup = 0E9E98AB1BBC8A02004FFE25;
 			productRefGroup = CD0C76C91E2AB8DF0096E269 /* Products */;