Merge pull request #98 from donejs/greenkeeper/through2-3.0.0

Update through2 to the latest version 🚀

Author: matthewp

package.json

@@ -51,7 +51,7 @@
     "steal-qunit": "^1.0.0",
     "steal-stache": "^4.0.0",
     "testee": "^0.7.0",
-    "through2": "^2.0.3"
+    "through2": "^3.0.0"
   },
   "system": {
     "ext": {