func Open(configPath string) (*sql.DB, error) {
	opts, err := NewOptions(configPath)
	if err != nil {
		return nil, err
	}
	return OpenOptions(opts)
}
Open is create goma client.
- database open
package goma
import (
	"database/sql"
)
type Goma struct {
	*sql.DB
	options Options
}