Added new config option for whether hearts will drop when a player is killed a non-player thing (fall damage, a mob, cactus, etc).
Config will now properly update.

As always, keep a backup of your data. I will work on a better method of config updating that should add new values in the correct order and with comments to explain what they do. If you would like these comments, you can reset your config by deleting it, but all your previous settings will be wiped.