Issue Description:

String(describing: NSNumber(true))
//=> "1"

I expected it to print:

"true"

Possible solution: Internally, String(describing:​) can first check if the value is NSNumber and if so, do this comparison to check if the underlying value is a Bool:

nsNumber == kCFBooleanTrue || nsNumber == kCFBooleanFalse

Lack of this makes debugging more difficult, and also makes it annoying to use JSONSerialization which return Bool values wrapped in NSNumber.