Merge pull request #71 from ethereumjs/greenkeeper/ethereumjs-block-2.1.0

Update ethereumjs-block to the latest version 🚀

Author: holgerd77

package.json

@@ -26,7 +26,7 @@
   "dependencies": {
     "async": "^2.6.1",
     "ethashjs": "~0.0.7",
-    "ethereumjs-block": "~2.0.1",
+    "ethereumjs-block": "~2.1.0",
     "ethereumjs-common": "~0.6.0",
     "ethereumjs-util": "~6.0.0",
     "flow-stoplight": "^1.0.0",