Update to Swift 5 and fix warnings

Author: ChaosCoder

Shouter.xcodeproj/project.pbxproj

@@ -147,21 +147,22 @@
 				TargetAttributes = {
 					DB79898A1CDB2C8A00419114 = {
 						CreatedOnToolsVersion = 7.3.1;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = 1110;
 					};
 					DB7989941CDB2C8A00419114 = {
 						CreatedOnToolsVersion = 7.3.1;
-						LastSwiftMigration = 0900;
+						LastSwiftMigration = 1110;
 						ProvisioningStyle = Manual;
 					};
 				};
 			};
 			buildConfigurationList = DB7989851CDB2C8A00419114 /* Build configuration list for PBXProject "Shouter" */;
 			compatibilityVersion = "Xcode 3.2";
-			developmentRegion = English;
+			developmentRegion = en;
 			hasScannedForEncodings = 0;
 			knownRegions = (
 				en,
+				Base,
 			);
 			mainGroup = DB7989811CDB2C8A00419114;
 			productRefGroup = DB79898C1CDB2C8A00419114 /* Products */;
@@ -348,7 +349,7 @@
 				SKIP_INSTALL = YES;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
 				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -368,7 +369,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SKIP_INSTALL = YES;
 				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};
@@ -384,7 +385,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Debug;
 		};
@@ -400,7 +401,7 @@
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				PROVISIONING_PROFILE_SPECIFIER = "";
 				SWIFT_SWIFT3_OBJC_INFERENCE = Off;
-				SWIFT_VERSION = 4.0;
+				SWIFT_VERSION = 5.0;
 			};
 			name = Release;
 		};