First Of All

Due to the "flattening" update of V0.2.0, we have merged many contents into one file. Now the configuration file of the custom content is no longer placed under the core, but in the data folder in the subfolder under the core.

So the first step you have to do is to create a folder under core, and then create a data folder in it. From then on, your configuration files have to be written under it.

Of course ResourcePack (resource pack) and DataPack (data pack) can also be written in the core folder

Supported reading jar and zip files in the v0.4.1 update and added support for reading mods directories.