chore(package): update ipfs-block-service to version 0.8.0 (#117)

https://greenkeeper.io/

Author: greenkeeperio-bot

package.json

@@ -44,7 +44,7 @@
     "chai": "^3.5.0",
     "fs-pull-blob-store": "^0.4.1",
     "idb-pull-blob-store": "^0.5.1",
-    "ipfs-block-service": "^0.7.2",
+    "ipfs-block-service": "^0.8.0",
     "ipfs-repo": "^0.11.2",
     "ncp": "^2.0.0",
     "pre-commit": "^1.2.2",