resampling for backward simulation now as class

code/eval/SmoothingEval1.h

@@ -52,6 +52,7 @@ public:
 
         //create the backward smoothing filter
         bf = new K::BackwardSimulation<MyState>(500);
+        bf->setSampler( std::unique_ptr<K::CumulativeSampler<MyState>>(new K::CumulativeSampler<MyState>()));
 
 
 	}