Upgrade tempy devDependency from ^0.2.1 to ^0.3.0

Author: vweevers

package.json

@@ -45,7 +45,7 @@
     "rimraf": "^2.6.1",
     "standard": "^12.0.0",
     "tape": "^4.10.0",
-    "tempy": "^0.2.1"
+    "tempy": "^0.3.0"
   },
   "standard": {
     "ignore": [