fix backspace list not work bug 6

Author: lyuehh

package.json

@@ -1,6 +1,6 @@
 {
   "name": "@dp/react-quill-2",
-  "version": "2.0.16",
+  "version": "2.0.17",
   "description": "The Quill rich-text editor as a React component.",
   "author": "zenoamaro <[email protected]>",
   "homepage": "https://github.com/zenoamaro/react-quill",
@@ -50,7 +50,7 @@
     "create-react-class": "^15.6.0",
     "lodash": "^4.17.4",
     "prop-types": "^15.5.10",
-    "@dp/quill": "2.0.0-dev.39",
+    "@dp/quill": "2.0.0-dev.40",
     "react-dom-factories": "^1.0.0"
   },
   "peerDependencies": {