update some dependencies

Author: dweber019

package.json

@@ -113,13 +113,13 @@
     "aurelia-tools": "0.2.4",
     "babel-plugin-transform-decorators-legacy": "1.3.4",
     "babel-preset-es2015": "6.16.0",
-    "babel-preset-es2015-loose": "7.0.0",
+    "babel-preset-es2015-loose": "8.0.0",
     "babel-preset-es2015-loose-native-modules": "1.0.0",
     "babel-preset-stage-1": "6.16.0",
     "babel-register": "6.16.3",
     "compression-webpack-plugin": "0.3.1",
-    "concurrently": "2.2.0",
-    "cross-env": "2.0.1",
+    "concurrently": "3.1.0",
+    "cross-env": "3.1.2",
     "favicons-webpack-plugin": "0.0.7",
     "http-server": "0.9.0",
     "ignore-loader": "0.1.1",