Release: v1.0.0-beta.3.

package.json

 {
   "name": "@ckeditor/ckeditor5-build-decoupled-document",
-  "version": "1.0.0-beta.2",
+  "version": "1.0.0-beta.3",
   "description": "CKEditor 5 document editor build.",
   "keywords": [
     "ckeditor5",