I also have the WDL folder from Reaper in there locally, but I just deleted it and it still compiled fine so I don't think I'm using it anymore.
Fair warning, it's kind of a pain getting everything compiling. I had to change a few of the HISE source files because the Rubberband library overlaps with the using juce namespace
There are notes about that in the transpose.h file, and there's some notes about FileSystem.browse() in the cabDesigner.js file if you want it to work properly when the user cancels the file explorer.
Yeh this seems to be working, I still have a dereferenced nullptr on the interface somewhere when I try and delete the plugin that I have to track down but otherwise it's doing the thing