Rebuild with updated dependencies

.babelrc

@@ -1,8 +1,6 @@
 {
   "presets": [
-    "es2017",
-    "es2016",
-    ["es2015", { "modules": false }],
+    "env",
     "stage-0",
     "react"
   ],

package.json

@@ -17,20 +17,22 @@
     "watch": "webpack --colors --progress --watch"
   },
   "devDependencies": {
-    "babel-cli": "^6.22.2",
+    "babel-cli": "^6.26.0",
+    "babel-core": "^6.26.0",
     "babel-eslint": "^7.2.3",
     "babel-loader": "^7.0.0",
     "babel-plugin-react-intl": "2.3.1",
-    "babel-plugin-transform-class-properties": "6.23.0",
-    "babel-plugin-transform-decorators-legacy": "1.3.4",
-    "babel-plugin-transform-es2015-modules-commonjs": "6.24.1",
-    "babel-plugin-transform-object-rest-spread": "6.23.0",
-    "babel-plugin-transform-react-remove-prop-types": "0.3.2",
+    "babel-plugin-transform-class-properties": "^6.23.0",
+    "babel-plugin-transform-decorators-legacy": "^1.3.4",
+    "babel-plugin-transform-es2015-modules-commonjs": "^6.24.1",
+    "babel-plugin-transform-object-rest-spread": "^6.23.0",
+    "babel-plugin-transform-react-remove-prop-types": "^0.3.2",
     "babel-plugin-transform-runtime": "6.23.0",
+    "babel-preset-env": "^1.6.0",
     "babel-preset-es2015": "6.22.0",
     "babel-preset-es2016": "6.22.0",
     "babel-preset-es2017": "6.22.0",
-    "babel-preset-react": "^6.22.0",
+    "babel-preset-react": "^6.24.1",
     "babel-preset-stage-0": "^6.24.1",
     "css-loader": "^0.28.1",
     "ejs-loader": "0.3.0",