[bug fix] Fix logger in bug migration
v0.24.2
[refactor] Use node.extend instead of utils-merge
Merge branch 'master' of git://github.com/rayshih/coke into rayshih-master

Conflicts:
	index.js
Mergebranch 'rayshih-master'
v0.24.3
[bug fix] fix wrong error log logic
[bug fix] fix circular problem while do JSON.stringify in log
[refactor] rewrite the LOG.error function