Adds more tiers of AnvilCraft's crates.
This mod is in early development. Suggestions are welcome, and so are contributions of models, textures and features.
为铁砧工艺（AnvilCraft）的板条箱添加更多等级。
本模组处于早期开发阶段，欢迎提出建议，也欢迎提交材质、贴图与功能。
