Add WPF lib that works on thread pool except for the reaction

[timonkrebs]

In WPF only the state relevant for the ui should be handeled on the UI thread. Every thing else should be done on workers.

Application.Current.Dispatcher.Invoke(new Action(() => { /* Your code here */ }));

[timonkrebs]

provide dependencies as seperate params so that they can be evaluated independently. Most important for the effect.