[achiku]

Hi author of xo! It is really a great library, and many designs of dgw is inspired by xo! And, yeah, I still think it is possible to contribute/extend xo, and would love to do it. However, since our project needs composite primary key/autogenerat key compatible SQL so badly, I created my own repo to just solve our problems. Plus, it was difficult to unit test xo, since it doesn't have *_test.go file at the moment.