fix: fixing issues with invoking class constructor without new (#7)

Author: karantrehan3

lib/Elements/index.js

@@ -329,4 +329,4 @@ class Elements extends Base {
   }
 }
 
-module.exports = Elements();
+module.exports = new Elements();

lib/Entities/index.js

@@ -28,4 +28,4 @@ class Entities {
   }
 }
 
-module.exports = Entities();
+module.exports = new Entities();

lib/Input/index.js

@@ -354,4 +354,4 @@ class Input extends Base {
   }
 }
 
-module.exports = Input();
+module.exports = new Input();