chore(package): update xo to version 0.26.0

Closes #11

Author: greenkeeper[bot]

package.json

@@ -27,7 +27,7 @@
   "homepage": "https://github.com/dimapaloskin/micro-compose#readme",
   "devDependencies": {
     "ava": "^0.25.0",
-    "xo": "^0.20.2"
+    "xo": "^0.26.0"
   },
   "xo": {
     "space": 2