chore(package): update xo to version 0.25.3 (#30)

chore(package): update xo to version 0.25.3

Author: t1st3

package.json

@@ -30,7 +30,7 @@
   "devDependencies": {
     "ava": "^2.3.0",
     "nyc": "^14.1.1",
-    "xo": "^0.24.0"
+    "xo": "^0.25.3"
   },
   "nyc": {
     "reporter": [