On ajoute 3 boutons à l'éditeur

assets/controllers/easymde_controller.js

@@ -7,9 +7,10 @@ export default class extends Controller {
             spellChecker: false,
             toolbar: [
                 'bold', 'italic', 'heading-2', 'heading-3', '|',
-                'quote', 'unordered-list', 'ordered-list', '|',
+                'quote', 'unordered-list', 'ordered-list', 'table', '|',
                 'link', 'image', 'upload-image' ,'|',
                 'preview', 'side-by-side', 'fullscreen', '|',
+                'undo', 'redo', '|',
                 'guide'
             ],
             uploadImage:true,