timeToLive, fadeOutAnimationDuration, afterHideCallback don't seem to be working

Have a really simple program where I am trying to show an HUD, but I can't seem to be able to get `timeToLive`, `fadeOutAnimationDuration` and `afterHideCallback` options to work,
despite whatever value I set the HUD disappears with no animations, `fadeInAnimationDuration` seems to work though.
also `timeToLive` does not seem to have any effect and the HUD disappears after the same time no matter what value I set.
`afterHideCallback` does not seem to trigger either.

```
import AppKit
import BezelNotification

func after(_ delay: TimeInterval, perform block: @escaping ()->(), on queue: DispatchQueue = OperationQueue.current?.underlyingQueue ?? .main) { // So this `queue` preserves the current queue and defaulted to the `main`. Also the caller can pass in the desired queue explicitly
queue.asyncAfter(deadline: .now() + delay, execute: block)
}

var showMuted: Bool = true

for argument in CommandLine.arguments {
if (argument == "un-muted") {
showMuted = false;
}
}

let app = NSApplication.shared

class AppDelegate: NSObject, NSApplicationDelegate {
func applicationDidFinishLaunching(_ notification: Notification) {
var path: String?
if (showMuted) {
path = Bundle.module.path(forResource: "mic.slash.fill", ofType: "png")
} else {
path = Bundle.module.path(forResource: "mic.fill", ofType: "png")
}
let bezelIcon = NSImage(contentsOfFile: path!)
BezelNotification.show(
messageText: "",
icon: bezelIcon,
timeToLive: .exactly(seconds: 2),
fadeInAnimationDuration: 0,
fadeOutAnimationDuration: 0
)
after(2) {
app.terminate(self)
}
}
}

let delegate = AppDelegate()
app.delegate = delegate
app.run()
```