For 1.9+ you DO need D3Core for this mod!
The JSON options are documented HERE!
Bags and bags of loot! Who can stop you now?!!?
What it do?
It now (since MC 1.9) uses the new loot table system for better and more advanced loot tables.
The system is incredibly powerful. See minecraft wiki.
This bag drops it's contents on the player, so you can't exploit it for more inventory space.
Bags of loot!