There are now settings for each mob to set the exp dropped on death.
If you remove a default file from the mobs file and let it generate again (reload or '/deepdark loadDefaults mobs') you will now have this new settings:
ExpToDrop:
min: 10
max: 20
(You can also add this manually and load the settings via reload or '/deepdark reload mobs')
On Death: a random amount of exp, between min and max will drop.
Also unknown small bugs were fixed.