Feature/changeSingleton#53,#65 (#67)

* change from singleton to global variable

* issue #65

* #65 test mode implemented

* cargo fmt --all

src/detections/print.rs

@@ -70,7 +70,9 @@ impl Message {
                 .take(target_length)
                 .collect::<String>();
 
-            if let Some(array_str) = configs::singleton()
+            if let Some(array_str) = configs::CONFIG
+                .read()
+                .unwrap()
                 .event_key_alias_config
                 .get_event_key(target_str.to_string())
             {