chore(package): update eslint-config-xo to version 0.29.0

Closes #3

Author: greenkeeper[bot]

package.json

@@ -31,7 +31,7 @@
     "coveralls": "^3.0.9",
     "eslint": "^6.8.0",
     "eslint-config-prettier": "^6.10.0",
-    "eslint-config-xo": "^0.27.2",
+    "eslint-config-xo": "^0.29.0",
     "eslint-plugin-json": "^2.0.1",
     "eslint-plugin-prettier": "^3.1.2",
     "husky": "^4.2.1",