Ability to alter XP in config.yml?

[sawarahh]

I have XPKeeper in my world, and would like there to be some downside to dying and not banking XP. A true/false on "return XP" would be enough, but it would be cool to provide a percentage, say players only get back 50% of their XP if they die.

Thanks!

[ArtillexStudios]

Added in 1.5.0