Bump packages

Author: cookpete

package.json

@@ -74,16 +74,16 @@
     "karma-mocha": "^1.2.0",
     "karma-mocha-reporter": "^2.2.0",
     "karma-sourcemap-loader": "^0.3.7",
-    "karma-webpack": "^1.8.0",
+    "karma-webpack": "^2.0.2",
     "mocha": "^3.1.0",
     "node-sass": "^4.1.1",
     "normalize.css": "^5.0.0",
     "react": "^15.3.2",
     "react-dom": "^15.3.2",
     "rimraf": "^2.5.4",
-    "sass-loader": "^4.0.2",
+    "sass-loader": "^6.0.1",
     "screenfull": "^3.0.2",
-    "snazzy": "^5.0.0",
+    "snazzy": "^6.0.0",
     "standard": "^8.3.0",
     "style-loader": "^0.13.1",
     "webpack": "^2.2.1",