Xcode 11 and iOS 12 project - Edited source files after making the changes outlined in this blog post: https://geekanddad.wordpress.com/2019/09/23/making-ios-12-projects-in-xcode-11

AppDelegate.swift

//
//  AppDelegate.swift
//  make1012work
//
//  Created by Dad on 9/23/19.
//  Copyright © 2019 Geek & Dad, LLC. All rights reserved.
//

import UIKit

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate {

	var window: UIWindow?

	func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
		// Override point for customization after application launch.
		return true
	}

	// MARK: UISceneSession Lifecycle
	@available(iOS 13, *)
	func application(_ application: UIApplication, configurationForConnecting connectingSceneSession: UISceneSession, options: UIScene.ConnectionOptions) -> UISceneConfiguration {
		// Called when a new scene session is being created.
		// Use this method to select a configuration to create the new scene with.
		return UISceneConfiguration(name: "Default Configuration", sessionRole: connectingSceneSession.role)
	}

	@available(iOS 13, *)
	func application(_ application: UIApplication, didDiscardSceneSessions sceneSessions: Set<UISceneSession>) {
		// Called when the user discards a scene session.
		// If any sessions were discarded while the application was not running, this will be called shortly after application:didFinishLaunchingWithOptions.
		// Use this method to release any resources that were specific to the discarded scenes, as they will not return.
	}


}

SceneDelegate.swift

//
//  SceneDelegate.swift
//  make1012work
//
//  Created by Dad on 9/23/19.
//  Copyright © 2019 Geek & Dad, LLC. All rights reserved.
//

import UIKit

@available(iOS 13, *)
class SceneDelegate: UIResponder, UIWindowSceneDelegate {

	var window: UIWindow?


	func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
		// Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
		// If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
		// This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
		guard let _ = (scene as? UIWindowScene) else { return }
	}

	func sceneDidDisconnect(_ scene: UIScene) {
		// Called as the scene is being released by the system.
		// This occurs shortly after the scene enters the background, or when its session is discarded.
		// Release any resources associated with this scene that can be re-created the next time the scene connects.
		// The scene may re-connect later, as its session was not neccessarily discarded (see `application:didDiscardSceneSessions` instead).
	}

	func sceneDidBecomeActive(_ scene: UIScene) {
		// Called when the scene has moved from an inactive state to an active state.
		// Use this method to restart any tasks that were paused (or not yet started) when the scene was inactive.
	}

	func sceneWillResignActive(_ scene: UIScene) {
		// Called when the scene will move from an active state to an inactive state.
		// This may occur due to temporary interruptions (ex. an incoming phone call).
	}

	func sceneWillEnterForeground(_ scene: UIScene) {
		// Called as the scene transitions from the background to the foreground.
		// Use this method to undo the changes made on entering the background.
	}

	func sceneDidEnterBackground(_ scene: UIScene) {
		// Called as the scene transitions from the foreground to the background.
		// Use this method to save data, release shared resources, and store enough scene-specific state information
		// to restore the scene back to its current state.
	}


}