Cast the simulation to_static before rendering it to disk to save space

src/render.rs

@@ -666,7 +666,7 @@ impl<S: GenericSim + Clone + Serialize> Renderer<S> for SerializerRenderer {
     }
     fn render(&self, state: &S, measurements: &[Box<dyn AbstractMeasurement>], _config: RenderConfig) {
         let frame = SerializedFrame {
-            state: state.clone(),
+            state: state.to_static(),
             measurements: measurements.iter().cloned().collect(),
         };
         let name = format!("{}{}.bc", self.out_base, frame.state.step_no());