Creaste custom queue for toasts.

Hi there, it's quite the same problem than this [issue](https://github.com/GrenderG/Toasty/issues/79).

But I don't want to close the toast because I want the user to be fully conscient of what's happening.

So, I wonder if there is a way to push up the old toast (still visible) and show the new toast below it.
Or maybe set up a queue of toast to be shown and when one is over, show the next in the queue ...

Thanks in advance