Remove slight divergence

src/main.rs

@@ -3,6 +3,7 @@ use std::fs::File;
 use std::io;
 use std::io::Write;
 use std::ops::Add;
+use std::path::PathBuf;
 use nd_array::Array;
 use rand::prelude::*;
 
@@ -22,7 +23,7 @@ struct Cli {
     seed: u64,
     max_particles: usize,
     stick_probability: f32,
-    csv_path: String,
+    csv_path: PathBuf,
 }
 
 fn main() {
@@ -38,6 +39,6 @@ fn main() {
         sys.update();
     }
 
-    sys.export_data()
+    sys.export_data(&cli.csv_path)
         .expect("Failed to write");
 }