commit规范

http://www.ruanyifeng.com/blog/2016/01/commit_message_change_log.html

https://segmentfault.com/a/1190000020924364?utm_source=tag-newest

http://www.imooc.com/article/298643?block_id=tuijian_wz

https://www.cnblogs.com/wangyingblock/p/12091465.html