Update devDeps to not include event-stream

package.json

@@ -23,13 +23,13 @@
     "select2-bootstrap-theme": "0.1.0-beta.10"
   },
   "devDependencies": {
-    "@babel/core": "^7.1.6",
+    "@babel/core": "^7.2.0",
-    "@babel/preset-env": "^7.1.6",
+    "@babel/preset-env": "^7.2.0",
     "babel-loader": "^8.0.4",
     "css-loader": "^1.0.1",
     "file-loader": "^2.0.0",
     "imports-loader": "^0.8.0",
-    "less": "^3.0.2",
+    "less": "^3.9.0",
     "less-loader": "^4.0.5",
     "mini-css-extract-plugin": "^0.4.5",
     "mkdirp": "^0.5.1",
@@ -37,7 +37,7 @@
     "optimize-css-assets-webpack-plugin": "^5.0.1",
     "rimraf": "^2.6.2",
     "style-loader": "^0.23.1",
-    "webpack": "^4.26.1",
+    "webpack": "^4.27.0",
     "webpack-cli": "^3.1.2"
   }
 }