* Upgrade xorm to v1.0.0

* small nit

* Fix tests

* Update xorm

* Update xorm

* fix go.sum

* fix test

* Fix bug when dump

* Fix bug

* update xorm to latest

* Fix migration test

* update xorm to latest

* Fix import order

* Use xorm tag

* move database settings from models to setting

* update docs

* fix checkout pr

* fix tests

* fix lint

* remove unsupported tidb options

* correct wrong variable name

* remove tidb totally