func IsInUpdateRange(nstamp int64) bool {
	now := time.Now()
	if now.Add(-defaultUpdateRange).Unix() < nstamp && nstamp < now.Add(defaultUpdateRange).Unix() {
		return true
	}
	return false
}
IsInUpdateRange returns true if stamp is in updateRange.
package recentlist
import (
	"errors"
	"log"
	"strconv"
	"strings"
	"sync"
	"time"
	"encoding/json"
	"github.com/boltdb/bolt"
	"github.com/shingetsu-gou/shingetsu-gou/cfg"
	"github.com/shingetsu-gou/shingetsu-gou/db"
	"github.com/shingetsu-gou/shingetsu-gou/node"
	"github.com/shingetsu-gou/shingetsu-gou/node/manager"
	"github.com/shingetsu-gou/shingetsu-gou/record"
	"github.com/shingetsu-gou/shingetsu-gou/tag/suggest"
)
const defaultUpdateRange = 24 * time.Hour  