Multiple updates

Changes:

• Added support for 1.17.x
• Added support for 1.18.x
• Updated Maven dependencies
• Updated to latest Java version
• Edited API version to 1.18.
• Implemented bStats statistics
• Please do this if you use MC 1.13.x - 1.17.x.

MC update

Updated to 1.16.2

Fixed inaccurate math

Chunk range for randomness was incorrectly calculating world border center. This is now fixed.

Async chunk loading

Support for PaperMC's async chunk loading.
This results in even better performance

Upgraded plugin and increased performance

High performance by using async thread.
Source code is now on GitHub (totally open-source).
Statistics for viewing live progress (/oreregen reload).
Reload command for configuration file (/oreregen stats).
A lot more options in the config.yml file.
And other minor changes