Fixing Build issues with Xcode 10.1 and swift 4.2

Foo/Foo.xcodeproj/project.pbxproj

@@ -312,6 +312,7 @@
 				ONLY_ACTIVE_ARCH = YES;
 				SDKROOT = iphoneos;
 				SWIFT_OPTIMIZATION_LEVEL = "-Onone";
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VERSIONING_SYSTEM = "apple-generic";
 				VERSION_INFO_PREFIX = "";
@@ -351,6 +352,7 @@
 				IPHONEOS_DEPLOYMENT_TARGET = 8.2;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				SDKROOT = iphoneos;
+				SWIFT_VERSION = 4.2;
 				TARGETED_DEVICE_FAMILY = "1,2";
 				VALIDATE_PRODUCT = YES;
 				VERSIONING_SYSTEM = "apple-generic";

Foo/Foo/Bar.swift

@@ -7,23 +7,21 @@
 //
 
 import UIKit
-import FooPrivate
+import Foo_Private
 
 
-
-@objc(Bar)
-public class Bar: NSObject {
+@objc public class Bar: NSObject {
 
-    public func doSomething() {
+    @objc public func doSomething() {
         // We can access Baz, which is public:
         let b = Baz()
-        println("\(b)")
+        print("\(b)")
 
         // We can also access Norf, even though it is not public:
         let n = Norf()
-        println("\(n)")
+        print("\(n)")
 
         let q = Qux()
-        println("\(q)")
+        print("\(q)")
     }
 }

Foo/Foo/Foo.private.modulemap

@@ -1,3 +1,3 @@
-module FooPrivate {
+module Foo_Private {
     export *
 }

Foo/Foo/FooPrivate/module.modulemap

@@ -4,7 +4,7 @@
 
  This file lives inside a folder, and that folder is the actual module. In Xcode the SWIFT_INCLUDE_PATHS needs to include the partent directory to that folder.
  */
-module FooPrivate {
+module Foo_Private {
     header "../Norf.h"
     export *
 }

Foo/FooTests/FooTests.swift

@@ -28,7 +28,7 @@ class FooTests: XCTestCase {
 
     func testPerformanceExample() {
         // This is an example of a performance test case.
-        self.measureBlock() {
+        self.measure() {
             // Put the code you want to measure the time of here.
         }
     }

MyApp/ViewController.swift

@@ -9,8 +9,6 @@
 import UIKit
 import Foo
 
-
-
 class ViewController: UIViewController {
 
     override func viewDidLoad() {