Update 3! IMPORTANT WON'T BUILD BUG FIX (7m/29/2020)
If you've downloaded this package since the last update, you will likely need to download and import it again to fix a bug that won't let you build. It will work fine, until you try to build it. This was due to the automatic layer detection script. It uses some editor only scripting and I forgot to check that you are actually in the editor in the script itself. The update adds the #if UNITY_EDITOR around the stuff that is editor specific code and should let you build now. T_T Super sorry for my oversight in this part.