Please read 3.0 release notes: https://www.spigotmc.org/resources/10905/update?update=492482

This update includes a few minor bugs found shortly after release:
- Temporarily removed treasure chest design that includes sand, as the sand can fall and be untracked by UC.
- I forgot to set the supported versions line on the last update, so this update fixes the auto updater as it includes one.
- Improved Minecraft version checking to only consider the last version, since the range of supported versions is so wide.

Supported versions: 1.8.8, 1.9.4, 1.10.2, 1.11.2, 1.12.2, 1.13.2, 1.14.4, 1.15.2, 1.16.5, 1.17.1, 1.18.2, 1.19.2, 1.19.3