Change back to SmallRng to restore reproducability

src/main.rs

@@ -31,8 +31,8 @@ fn main() {
 
     println!("Running: {:?}", cli);
 
-    let mut sys = DLASystem::<ThreadRng, VectorStorage, LocalRandomWalker>::new(
+    let mut sys = DLASystem::<SmallRng, VectorStorage, LocalRandomWalker>::new(
-        ThreadRng::default(),
+        SmallRng::seed_from_u64(cli.seed),
         cli.max_particles,
         cli.stick_probability
     );