You can see the full Git changelog here:
https://github.com/MythicDrops/MythicDrops/compare/v9.0.4...v9.1.0
WARNING
With newer versions of Spigot (1.21.3+), there are some changes to how attributes are represented in the API. This may result in attributes that you have configured to be added to items with MythicDrops breaking. Please make sure to use the Minecraft name (e.g., `minecraft:attack_damage` instead of `GENERIC_ATTACK_DAMAGE`) moving forward.
Changes
- Updated to compile against Spigot 1.21.5.
Fixes
- Fixed an issue where the Socket Extender limit configuration option didn't work. This fix will only apply after a new Socket Extenders are applied to an item.