Updated: electron version->4 & webpack version -> 4

package.json

@@ -111,22 +111,22 @@
     "css-loader": "^0.28.4",
     "del": "^3.0.0",
     "devtron": "^1.4.0",
-    "electron": "1.8.8",
+    "electron": "4.0.0",
     "electron-builder": "^19.19.1",
     "electron-debug": "^1.4.0",
     "electron-devtools-installer": "^2.2.0",
     "eslint": "^4.4.1",
     "eslint-config-standard": "^10.2.1",
     "eslint-friendly-formatter": "^3.0.0",
-    "eslint-loader": "^1.9.0",
+    "eslint-loader": "^2.1.1",
     "eslint-plugin-html": "^3.1.1",
     "eslint-plugin-import": "^2.7.0",
     "eslint-plugin-node": "^5.1.1",
     "eslint-plugin-promise": "^3.5.0",
     "eslint-plugin-standard": "^3.0.1",
     "extract-text-webpack-plugin": "^3.0.0",
-    "file-loader": "^0.11.2",
-    "html-webpack-plugin": "^2.30.1",
+    "file-loader": "^3.0.1",
+    "html-webpack-plugin": "^3.2.0",
     "inject-loader": "^3.0.0",
     "karma": "^1.3.0",
     "karma-chai": "^0.1.0",
@@ -136,6 +136,7 @@
     "karma-sourcemap-loader": "^0.3.7",
     "karma-spec-reporter": "^0.0.31",
     "karma-webpack": "^2.0.1",
+    "mini-css-extract-plugin": "0.4.0",
     "mocha": "^3.0.2",
     "multispinner": "^0.2.1",
     "node-loader": "^0.6.0",
@@ -143,17 +144,18 @@
     "pug-loader": "^2.3.0",
     "require-dir": "^0.3.0",
     "spectron": "^3.7.1",
-    "style-loader": "^0.18.2",
+    "style-loader": "^0.23.1",
     "stylus": "^0.54.5",
     "stylus-loader": "^3.0.1",
-    "url-loader": "^0.5.9",
+    "url-loader": "^1.1.2",
     "vue-html-loader": "^1.2.4",
-    "vue-loader": "^13.0.5",
-    "vue-style-loader": "^3.0.1",
+    "vue-loader": "^15.4.2",
+    "vue-style-loader": "^4.1.2",
     "vue-template-compiler": "^2.4.2",
-    "webpack": "^3.5.2",
-    "webpack-dev-server": "^2.7.1",
-    "webpack-hot-middleware": "^2.18.2",
-    "webpack-merge": "^4.1.0"
+    "webpack": "^4.15.1",
+    "webpack-cli": "^3.0.8",
+    "webpack-dev-server": "^3.1.4",
+    "webpack-hot-middleware": "^2.22.2",
+    "webpack-merge": "^4.1.3"
   }
 }