Great! Though, as I feel obligated to reiterate, this update is really backwards incompatible, and a bunch of errors will most certainly pop up upon attempting to upgrade.
I'd personally recommend making a separate build where you remove all of the legacy PaperSkeleton-related stuff in your project before you implement the new update and rebuild from there.
I apologize for making this update rather inconvenient to upgrade towards, but in order to remake this addon, I needed to break it first.