upgrade various webpack plugins

package.json

@@ -27,8 +27,8 @@
     "chart.js": "1.0.2",
     "classlist-polyfill": "^1.2.0",
     "clipboard": "^1.7.1",
-    "compression-webpack-plugin": "^1.0.0",
-    "copy-webpack-plugin": "^4.0.1",
+    "compression-webpack-plugin": "^1.1.7",
+    "copy-webpack-plugin": "^4.4.1",
     "core-js": "^2.4.1",
     "cropper": "^2.3.0",
     "css-loader": "^0.28.0",
@@ -87,7 +87,7 @@
     "vue-template-compiler": "^2.5.13",
     "vuex": "^3.0.1",
     "webpack": "^3.11.0",
-    "webpack-bundle-analyzer": "^2.8.2",
+    "webpack-bundle-analyzer": "^2.10.0",
     "webpack-stats-plugin": "^0.1.5",
     "worker-loader": "^1.1.0"
   },