Paper keeps on changing their plugin bootstrapping and loading code, causing me to have to adapt once again.

This update accomodates for the following changes in Paper:

• Paper Plugins Dependency Format Update (#9160) · PaperMC/Paper@bc4a664 (github.com)
  
• [ci skip] Use a separate interface for bootstrapping (#9267) · PaperMC/Paper@175a774 (github.com)

Even if you don't update Paper, this version of ScalaLoader should still continue to work, because I made the changes to be backwards-compatible.
Cheers!