Allow React ^16.14.0 as peer dependency

package.json

@@ -154,7 +154,7 @@
     "xhr2": "^0.2.1"
   },
   "peerDependencies": {
-    "react": "^17.0.2",
-    "react-dom": "^17.0.2"
+    "react": "^17.0.2 || ^16.14.0",
+    "react-dom": "^17.0.2 || ^ 16.14.0"
   }
 }