Toast webcomponent example, MLIResume is in another gist. Substitute with your own choice of Promise solution.
You can pop any lit html-tagged template literal or DOM element as long as it know to remove()
itself.
@query('#toaster') toaster;
_testToast( title, body, icon, col, bg, timeout = 0 ){
const toastRequest = new CustomEvent(
'toast-notification',
{
bubbles: true,