chore(package): update dat-encoding to version 5.0.0 (#180)

Author: greenkeeper[bot]

package.json

@@ -40,7 +40,7 @@
   },
   "devDependencies": {
     "count-files": "^2.6.2",
-    "dat-encoding": "^4.0.2",
+    "dat-encoding": "^5.0.0",
     "dependency-check": "^2.8.0",
     "memdb": "^1.3.1",
     "memdown": "^1.2.4",