KVO Support

[NickKibish]

• Who are we?
• Objective-C dinosaurs!
• What do we want?
• KVO!

Added @objc modificator to isScanning property to make it observable.

Example

func setup() {
     obserwation = observe(\.cm?.isScanning,
                           options: [.old, .new],
                           changeHandler: { _, change in
            
        change.newValue?.flatMap { new in
            print("Is Scanning: \(new)")
        }
    )
}

[CLAassistant]

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