Major features and improvements

- Implement extended world heights from Y-64 to Y319

The options `max_gen_height` and `min_gen_height` have been added to the worlds.yml under `world:` to set the new generation heights.
If you're upgrading from a previous version that didn't have these values, you initially should visit `max_height` and `min_height` in the same file and align them with the new generation heights, to utilize the new heights, if desired.

If the former values are setup to utilize thew new heights, (re)generating chunks, for example during a plot clear, does expand the wall and the floor blocks. However, that is not needed and players can simply break through the floor to build below Y0.

A note for FAWE users: Fawe needs updating to adapt the changes from this release. Plot clearing and similar hook-operations cannot perform outside Y0 -> 256 yet.
Feel free to join our discord server ( https://discord.gg/intellectualsites) to receive a notification once Fawe is updated.

Chore

- Replace delombok-ed equals and hashCode methods

Click here for the full changelog: https://github.com/IntellectualSites/PlotSquared/releases/tag/6.6.0