v2.4.1 (Build 347)

Don't have the usual changelog formatting for this update - just want to get this update out ASAP since it fixes some important issues

Update Information
All of the following were fixed by @stumper66 with thorough testing from @Oathkeeper. Two legends that have carried this plugin to its current stage. Hope you all appreciate their work (it's not just me behind the updates)!
No file changes required. Drag n' drop the new version in. Read the installation instructions on the Wiki if you are unsure how to update LevelledMobs.

Changelog:
- fixed customdrops not dropping in certain scenarios
- fixed dup bug with donkeys with chests
- fixed customdrops that use groupIds not randomizing the list properly
- summon command checks for 2 block height room before summoning
- defaults not working in certain scenarios
- more customdrop related bugs squashed