Bags and bags of loot! Who can stop you now?!!?
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!

Get up to date builds here or Use the Issue list! Don't forget the crash log!