chore(package): update tmp to version 0.2.1

Closes #30

Author: greenkeeper[bot]

package.json

@@ -27,7 +27,7 @@
     "n3": "^0.8.5",
     "random-access-memory": "^3.0.0",
     "standard": "^12.0.0",
-    "tmp": "0.0.33"
+    "tmp": "0.2.1"
   },
   "scripts": {
     "test": "mocha test/**.spec.js",