Update dependencies

package.json

@@ -10,28 +10,28 @@
   "dependencies": {},
   "devDependencies": {
     "babel-core": "^6.26.3",
-    "babel-loader": "7",
+    "babel-loader": "^7.1.5",
     "babel-preset-env": "^1.7.0",
     "coveralls": "^3.0.2",
-    "css-loader": "^1.0.0",
+    "css-loader": "^2.1.1",
     "istanbul-instrumenter-loader": "^3.0.1",
     "jasmine-core": "^3.2.1",
-    "karma": "^3.0.0",
+    "karma": "^4.0.1",
     "karma-chrome-launcher": "^2.2.0",
     "karma-coverage": "^1.1.2",
-    "karma-jasmine": "^1.1.2",
+    "karma-jasmine": "^2.0.1",
     "karma-phantomjs-launcher": "^1.0.4",
     "karma-sourcemap-loader": "^0.3.7",
     "karma-webpack": "^3.0.5",
-    "mini-css-extract-plugin": "^0.4.1",
+    "mini-css-extract-plugin": "^0.5.0",
     "node-sass": "^4.9.3",
     "optimize-css-assets-webpack-plugin": "^5.0.0",
     "sass-loader": "^7.1.0",
     "standard": "^12.0.1",
     "uglifyjs-webpack-plugin": "^2.0.1",
-    "webpack": "^4.16.5",
-    "webpack-cli": "^3.1.0",
-    "webpack-dev-server": "^3.1.9"
+    "webpack": "^4.29.6",
+    "webpack-cli": "^3.2.3",
+    "webpack-dev-server": "^3.2.1"
   },
   "scripts": {
     "test": "standard && karma start",