Nested Observables

	observ := observable.NewObservable(g, 0)
	observ.OnChanged(g, func(new observable.Object, old observable.Object) {
		if new.(int) < 1 {
			return
		}
		
		fmt.Println("First set", new, "(", old,") call gets", observ.Get());
	})
	observ.OnChanged(g, func(new observable.Object, old observable.Object) {
		if new.(int) < 1 {
			return
		}
		
		fmt.Println("Second set", new, "(", old,") call gets", observ.Get());
		if new.(int) < 10 {
			observ.Set(new.(int) + 1)
		}
	})
	observ.OnChanged(g, func(new observable.Object, old observable.Object) {
		if new.(int) < 1 {
			return
		}
		
		fmt.Println("Third set", new, "(", old,") call gets", observ.Get());
	})
	observ.Set(1);