Needed to Update to The New Package "gorm.io/gorm"

Got this error when using:
```go
import (
"gorm.io/gorm"
"github.com/qor/validations"
)

database, _ := gorm.Open(...)
validations.RegisterCallbacks(database)
```
Err:
```console
cannot use database (variable of type *"gorm.io/gorm".DB) as *"github.com/jinzhu/gorm".DB value in argument to validations.RegisterCallbacks
```