Mod API originally created by @Azanor that adds 7 slots to the player inventory.
You can learn how to use the API here.
For any questions DM me on twitter: @_nesslazy
I am not the original creator of the mod! I just ported to 1.14. The idea, resources (textures, logo…) and most of the code was created by @Azanor.
The license you can find it on the original repository.