The code has been significantly rewritten and improved. More details can be found on the 
github.
 Folia support has been added in test mode. So you will need forks 
WorldGuard and 
WorldEdit (click on the name to go to the fork).
 Two new mobs have been added for checking starting from version 1.21, or 1.20.5 if experiment features are enabled.
 For developers: CheckStyle was added if someone will fork the project.