Rename the new functions to replace the old functions.

src/bin.rs

@@ -48,7 +48,7 @@ fn main() {
     println!(
         "{}",
         dust_renderer
-            .new_render(main_template_name, &breadcrumbs)
+            .render(main_template_name, &breadcrumbs)
             .expect("Failed to render")
     );
 }