Convert more classes to be exportable

Author: limzykenneth

src/app.js

@@ -5,9 +5,6 @@ import './core/friendly_errors/validate_params';
 import './core/friendly_errors/file_errors';
 import './core/friendly_errors/fes_core';
 import './core/friendly_errors/sketch_reader';
-import './core/p5.Element';
-// import './core/p5.Graphics';
-// import './core/rendering';
 import shape from './shape';
 shape(p5);
 

src/core/main.js

@@ -665,7 +665,7 @@ import rendering from './rendering';
 import renderer from './p5.Renderer';
 import renderer2D from './p5.Renderer2D';
 import graphics from './p5.Graphics';
-import element from './p5.Element';
+// import element from './p5.Element';
 
 p5.registerAddon(transform);
 p5.registerAddon(structure);
@@ -674,6 +674,6 @@ p5.registerAddon(rendering);
 p5.registerAddon(renderer);
 p5.registerAddon(renderer2D);
 p5.registerAddon(graphics);
-p5.registerAddon(element);
+// p5.registerAddon(element);
 
 export default p5;