Import the .unitypackage file which can be found here (direct link) or in the releases tab.
- Import SDK.
- Download Harmony (https://github.com/pardeike/Harmony/releases) .NET 4.7 into
Assets/Editor(Create if doesn't exist). - Copy SdkPatchBase.cs and WorldSdkPatcher.cs into
Assets/Editor.
The last checked version is 3.5.0 but the patches should work on newer versions