Changes from 4.0.6 b35:

• new setting in settings.yml level-mobs-upon-spawn-max-players (replaces level-mobs-upon-spawn); default is 10
• new setting in settings.yml update-mobs-upon-nonplayer-damage-max-players; default is 5
• settings version incremented to 37
• new custom drops features: amount-formula, chance-formula, equipped-formula and overall-chance-formula. you can input formulas to determine the amount
• new debug type: CUSTOM_DROPS_FORMULA
• customdrops overall_chance renamed to overall-chance and overall_permission renamed to overall-permission
• customdrops.yml file version incremented to 12
• construct-level results are now rounded to integer rather than cast
• fixed a bug in custom drops when used with LM Items and sticks are used instead of the drops until a reload occurs
• code cleanup in custom drops logic
• fix error in folia if a run delay is used with a custom command
• apply nbt-data synchronously
• new placeholder: %entity-max-health-percent% with optional precision. example of 3 decimals: %entity-max-health-percent-3%
• fix construct-level random levelling getting populated into %weighted-random% instead of %random%
• when a PAPI variable is used in a nametag, pass the nearest player reference if present instead of null. it will only have a player reference if PVM is enabled
• overall-chance logic fixed (broken since 3.15.0)
• all debug messages that reference a mob will show it's corresponding level
• custom drops debug message improvements
• 2 plugins added to externalplugins.yml: gadgets-menu and my-pet
• fix mobs with a custom name with hex colors not showing the proper colors on the nametag (Paper servers only)
• removed custom enums that mimicked vanilla SpawnReason and DeathCause. This will ensure future minecraft compatibility without needing to update LM
• debug message improvements
• removed a unused debug type
• fix error running /lm debug show-pdc-keys on latest 1.21 builds
• when using item-drop-formula the result will use the floor math operation instead of rounding to nearest integer
• changed nametag manager logic to handle errors better
• new command: /lm debug view-queues

Thanks from the ArcanePlugins team:
PenalBuffalo | LevelledMobs4 Developer
lokka30 | Original Author of LevelledMobs
OathKeeper | The Druid, Solitude | Support and R&D