cleaned up code

src/backend.rs

@@ -139,8 +139,9 @@ impl<'a> Vm {
 			    match parser.inner_next() {
 				Some("stack") => {
 				    for item in &self.stack {
-					println!("{:?}", item);
+					print!("{:?} ", item);
 				    }
+				    println!("<- TOP");
 				},
 				Some("data") => {
 				    println!("{:?}", self.dictionary.data);