This is a redistribution of SunSharp for Unity, with additional code and helpers.
It appears that it should work, but builds were not yet tested. You can message me in case of problems!
Target SunVox Library version: 2.1b.
In the Package Manager, press the big '+' button in the top-left corner, then click on 'Add package from git URL'. After filling out the field with this repository's URL, the package should be available to use.
See the example here. The code is about the same as with the NuGet packages.