chore(package): upgrade devDependencies

Upgrade devDependencies:
* coveralls@3.0.0
* eslint@4.12.0
* mocha@4.0.1
* webpack@3.8.1

Author: remarkablemark

package.json

@@ -35,14 +35,14 @@
     "style-to-object": "0.2.0"
   },
   "devDependencies": {
-    "coveralls": "^2.13.1",
-    "eslint": "^4.1.1",
+    "coveralls": "^3.0.0",
+    "eslint": "^4.12.0",
     "istanbul": "^0.4.5",
-    "mocha": "^3.4.2",
+    "mocha": "^4.0.1",
     "react": "^16",
     "react-dom": "^16",
-    "webpack": "^3.0.0"
-    "standard-version": "^4.2.0"
+    "standard-version": "^4.2.0",
+    "webpack": "^3.8.1"
   },
   "peerDependencies": {
     "react": "^0.14 || ^15 || ^16"