Flyouts

Flyouts in TinyLittleMvvm are very similar to Dialogs. There are two differences:

1. The view for the flyout must derive from MahApps.Metro's Flyout control. A simple UserControl is also ok, TinyLittleMvvm will wrap it in a Flyout automatically.

2. To show the flyout, you need an instance of IFlyoutManager and call ShowFlyout, e.g.

   await _flyoutManager.ShowFlyout<SampleFlyoutViewModel>();