The previous warnings still apply! Make sure you read them!

Added basic skull support. It now saves the UUID of the skull and will set the rollback-ed skull to this UUID.

NOTE: Currently it does not work well if the skull's owner is offline. I don't know how to fix this without lagging the server. If I find a good solution I can update this.

Previous files will work, and files created in this version will work with a warning on the older version when it hits a skull (though I would recommend updating).