Observing UserDefaults key for change does not work with .'s in the key

[nnascim]

Line 187 in NSObject+KeyValueObserving.swift:

let components = keyPath.components(separatedBy: ".")
in

static func observe(
		_ object: NSObject,
		keyPath: String,
		options: NSKeyValueObservingOptions,
		action: @escaping (_ value: AnyObject?) -> Void
	) -> AnyDisposable { }

Separating the keyPath String by components is not compatible with UserDefaults:

let key = "io.chuva.token"
let producer = UserDefaults.standard.reactive.producer(forKeyPath: key)

The key is just a String and as such is valid for UserDefaults, however, the above producer will not emit any values.

I have included a test file. Test testKeyWithDotIsObserved() fails.
DefaultsTests.swift.txt

[RuiAAPeres]

Hello. 👋 Thanks for opening this issue. Due to inactivity, we will soft close the issue. If you feel that it should remain open, please let us know. 😄