fix(sync): should not sync package when maintainers sort change
fix(sync): should not sync package when maintainers sort change

Closes #500

chinakids/cnpmjs.org,irachex/cnpmjs.org,yufi113/cnpmjs.org,chinakids/cnpmjs.org,chinakids/cnpmjs.org,limianwang/cnpmjs.org,marvinlee/cnpmjs.org,marvinlee/cnpmjs.org,limianwang/cnpmjs.org,yufi113/cnpmjs.org,limianwang/cnpmjs.org,irachex/cnpmjs.org,yufi113/cnpmjs.org,irachex/cnpmjs.org,marvinlee/cnpmjs.org