Release commit for v2.0.2

Author: holgerd77

package.json

@@ -1,6 +1,6 @@
 {
   "name": "ethereumjs-blockchain",
-  "version": "2.0.1",
+  "version": "2.0.2",
   "description": "A module to store and interact with blocks",
   "main": "index.js",
   "scripts": {
@@ -25,9 +25,9 @@
   "homepage": "https://github.com/ethereumjs/ethereumjs-blockchain#readme",
   "dependencies": {
     "async": "^2.1.2",
-    "ethashjs": "^0.0.7",
-    "ethereumjs-block": "^1.2.2",
-    "ethereumjs-util": "^5.0.1",
+    "ethashjs": "~0.0.7",
+    "ethereumjs-block": "~1.6.0",
+    "ethereumjs-util": "~5.1.0",
     "flow-stoplight": "^1.0.0",
     "levelup": "^1.3.0",
     "memdown": "^1.1.0",