Merge branch 'master' into patch-1

Issues/Week277.md

@@ -6,11 +6,13 @@
 * [Create App Store Videos With Trailer App](https://agostini.tech/2019/04/08/create-app-store-videos-with-trailer-app/), by [@dagostin](https://twitter.com/dagostin) 
 * [Using unwind segues to navigate back to previous screens](https://www.appsdissected.com/unwind-segues-storyboard/), by [@appsdissected](https://twitter.com/appsdissected)
 * [Stubbing in pair with Swift compiler: a spy registration](https://medium.com/flawless-app-stories/stubbing-in-pair-with-swift-compiler-a-spy-registration-bbfdc1cf87a1?source=friends_link&sk=fbfc4b66bdffb339f11b857facbee07c), by [@norapsi](https://twitter.com/norapsi)
+* [Swift 5 Frozen enums](https://useyourloaf.com/blog/swift-5-frozen-enums/), by [@kharrison](https://twitter.com/kharrison)
 
 **Tools/Controls**
 
 * [SecureDefaults](https://github.com/vpeschenkov/SecureDefaults) - A lightweight wrapper over UserDefaults/NSUserDefaults with an extra AES-256 encryption layer, by [@vpeschenkov](https://twitter.com/vpeschenkov)
 * [optionals.org](https://www.optionals.org/) - A website that shows many various ways to use optionals in Swift, by Caleb
+* [Codextended](https://github.com/JohnSundell/Codextended), by [@johnsundell](https://twitter.com/johnsundell)
 
 **Business/Career**