Upgrading everything, especially router

package.json

@@ -10,39 +10,39 @@
   },
   "main": "app.js",
   "dependencies": {
-    "babel-core": "^6.26.3",
-    "babel-loader": "^7.1.4",
-    "babel-preset-es2015": "^6.22.0",
-    "babel-preset-react": "^6.22.0",
-    "babel-preset-stage-0": "^6.24.1",
-    "babel-preset-stage-2": "^6.22.0",
+    "jquery": "^3",
+    "mopidy": "^0.5"
+  },
+  "devDependencies": {
+    "babel-core": "^6",
+    "babel-loader": "^7",
+    "babel-preset-es2015": "^6",
+    "babel-preset-react": "^6",
+    "babel-preset-stage-0": "^6",
+    "babel-preset-stage-2": "^6",
     "copy-dir": "^0.3.0",
     "css-loader": "^0.28.11",
     "expose-loader": "0.7.3",
-    "extract-text-webpack-plugin": "3.0.0",
+    "extract-text-webpack-plugin": "^3",
     "file-loader": "^0.11.2",
-    "flux": "^3.1.3",
     "fs-copy-file": "2.1.2",
-    "jquery": "^3.2.1",
     "md5": "2.2.1",
-    "mopidy": "^0.5.0",
-    "node-sass": "^4.11.0",
-    "react": "^16.3.0",
-    "react-dom": "^16.3.0",
+    "node-sass": "^4",
+    "react": "^16",
+    "react-router-dom": "^4",
+    "react-dom": "^16",
     "react-fontawesome": "*",
     "react-ga": "^2.3.4",
     "react-input-range": "1.3.0",
-    "react-redux": "^5.0.7",
-    "react-router": "^3.2.1",
+    "redux": "^4",
+    "react-redux": "^6",
     "react-sortablejs": "^1.3.6",
-    "redux": "3.7.2",
-    "redux-devtools": "^3.4.2",
-    "redux-thunk": "2.2.0",
-    "sass-loader": "^6.0.7",
-    "sortablejs": "^1.7.0",
+    "redux-thunk": "^2",
+    "sass-loader": "^6",
+    "sortablejs": "^1.7",
     "style-loader": "^0.13.2",
     "url-loader": "^0.5.9",
-    "webpack": "^3.11.0",
+    "webpack": "^3",
     "webpack-strip": "0.1.0"
   },
   "scripts": {