fix(package): upgrade react-dom-core@0.0.3

This ensures the package doesn't break for react >=16.3

Author: remarkablemark

package.json

@@ -33,7 +33,7 @@
   ],
   "dependencies": {
     "html-dom-parser": "0.1.3",
-    "react-dom-core": "0.0.2",
+    "react-dom-core": "0.0.3",
     "style-to-object": "0.2.0"
   },
   "devDependencies": {