BACKUP - BACKUP - BACKUP - BACKUP
Really, please backup before updating.

This uSkyBlock release is for Spigot (and Paper) 1.15.1 only!

Dependencies:
WorldEdit 7.1.0 Beta 1: https://dev.bukkit.org/projects/worldedit/files/2844696
WorldGuard 7.0.2: https://dev.bukkit.org/projects/worldguard/files/2855477
Multiverse-Core 4.1.0: https://dev.bukkit.org/projects/multiverse-core/files/2768599
Multiverse-NetherPortals 4.1.0: https://dev.bukkit.org/projects/multiverse-netherportals/files/2768602
Vault 1.7.2: https://www.spigotmc.org/resources/vault.34315/update?update=274990

uSkyBlock currently doesn't support FAWE.

Please note that:
1) Please, backup your full server before upgrading to v2.8.7;
2) Regenerating an island reports the time it took in the serverlog for now.

Changes in 2.8.7:
Mainly updating to release an official version for MC1.15.1 after multiple questions about it. This release is build for MC1.15.1, including necessary changes to work with 3D biomes.

Please report all the issues you experience in the Discussions-section on the forums or on Github. Include the full server log and possibly a timings report if there are performance issues.