updates to cargo so builds work

src/types.rs

@@ -197,3 +197,17 @@ impl std::fmt::Display for Keyword {
         std::fmt::Display::fmt(&self.0, f)
     }
 }
+
+#[cfg(test)]
+mod test {
+    use super::*;
+
+    #[test]
+    fn test_conversions() {
+        let value = Value::Symbol(Symbol("c1".to_owned()));
+        dbg!(&value);
+        let string = String::from("c1");
+        let convert = String::from(value);
+        assert_eq!(string, convert);
+    }
+}