Use fast operators mode in rhai-run.

src/bin/rhai-run.rs

@@ -50,6 +50,8 @@ fn main() {
         // Initialize scripting engine
         let mut engine = Engine::new();
 
+        engine.set_fast_operators(true);
+
         #[cfg(not(feature = "no_optimize"))]
         engine.set_optimization_level(rhai::OptimizationLevel::Simple);