NewLevels | Let Player Upgrade More Difficult

可以在配置文件中自定义原版升级所需要的经验以及最高等级

机制：
真正获得的经验 = 向上取整(原本获得的经验 * (原版升级所需经验/设定升级所需经验))

命令：
/nl help 获取所有指令提示

You can customize the experience and the highest level required for the original upgrade in the configuration file

Mechanism:
Real experience gained = rounded up (original experience gained * (experience required for original upgrade / experience required for set upgrade))

Command:
/NL help - get all instruction tips