func Load(project *config.Project, fileName string) (err error) {
	if _, statErr := os.Stat(fileName); os.IsNotExist(statErr) {
		return nil
	}
	return project.AddValue(fileName)
}
Load load previous value
package previousval
import (
	"os"
	"github.com/state-alchemists/zaruba/config"
	yaml "gopkg.in/yaml.v3"
)