* using "force loaded" chunk flag instead of canceling ChunkUnloadEvents, which is no longer possible as of Spigot 1.14
* replaced UUID lookup code with newer and slightly improved implementation
* added new 1.14 wooden sign variations to safe open blocks list
* fix for error if Fill was canceled or finished without actually loading any chunks
* added notice to end of Trim recommending server restart
Provides public methods to get the percentage for the fill and trim
task. These can be used by 3rd party plugins to get the calculated
percentage or get the values of the processed/total amount of chunks.
Possible usages I have in mind:
- Boss bar showing a progress of the fill task
- Action bar showing the status
- ...