fix trailing empty line

src/response.rs

@@ -64,7 +64,11 @@ impl Display for Departure {
                 f.write_str(&format!(" | delayed: {actual_time} "))?;
             }
         }
-        f.write_str("\n")?;
         Ok(())
     }
 }
+
+pub fn format_departures(response: Response) -> String {
+    let departures: Vec<String> = response.departures.iter().map(|d| d.to_string()).collect();
+    departures.join("\n\n")
+}