Only transform-async-to-generator for client code. Allows async to work with mocha tests (if proper node version)

.babelrc

@@ -5,7 +5,6 @@
   ],
   "plugins": [
     "add-module-exports",
-    "transform-async-to-generator",
     "transform-class-properties",
     "transform-decorators-legacy",
     "transform-object-assign",

client/.babelrc

@@ -0,0 +1,6 @@
+{
+  "extends": "../.babelrc",
+  "plugins": [
+    "transform-async-to-generator",
+  ]
+}

package.json

@@ -165,6 +165,6 @@
     "webpack": "^2.2.1"
   },
   "engines": {
-    "node": ">=7.0.0"
+    "node": ">=7.6.0"
   }
 }

test/mocha.opts

@@ -2,7 +2,6 @@ test/helpers/*.js
 test
 --compilers js:babel-core/register
 --require ignore-styles
---require babel-polyfill
 --recursive
 --colors
 --sort