Final code cleanup

src/navigation.rs

@@ -132,7 +132,7 @@ impl ScreenState {
                 Ok(v) => v,
             };
 
-            let id: Id = history_file_name[4..history_file_name.len() - 12]
+            let id = history_file_name[4..history_file_name.len() - 12]
                 .parse::<Id>()
                 .unwrap();