chore(package): update xo to version 0.28.1

Closes #1488

lib/definitions/errors.js

@@ -4,7 +4,8 @@ const pkg = require('../../package.json');
 const {RELEASE_TYPE} = require('./constants');
 
 const [homepage] = pkg.homepage.split('#');
-const stringify = obj => (isString(obj) ? obj : inspect(obj, {breakLength: Infinity, depth: 2, maxArrayLength: 5}));
+const stringify = object =>
+  isString(object) ? object : inspect(object, {breakLength: Infinity, depth: 2, maxArrayLength: 5});
 const linkify = file => `${homepage}/blob/master/${file}`;
 const wordsList = words =>
   `${words.slice(0, -1).join(', ')}${words.length > 1 ? ` or ${words[words.length - 1]}` : trim(words[0])}`;

lib/definitions/plugins.js

@@ -19,7 +19,7 @@ module.exports = {
     outputValidator: output => !output || RELEASE_TYPE.includes(output),
     preprocess: ({commits, ...inputs}) => ({
       ...inputs,
-      commits: commits.filter(commit => !/\[skip\s+release\]|\[release\s+skip\]/i.test(commit.message)),
+      commits: commits.filter(commit => !/\[skip\s+release]|\[release\s+skip]/i.test(commit.message)),
     }),
     postprocess: results =>
       RELEASE_TYPE[