For 1.17 allows any item to pass through a furnace

Tired of super smelters becoming blocked due to carelessness?
This data pack will allow any non-smeltable item to pass through a furnace in the shortest possible time

Notes
1. No experience is generated for any non-smeltable items
2. Fuel will still be initiated/used
3. Any tools, weapons or gear inserted into a fueled furnace will lose any enchants, but will also be restored to full durability

2020-04-11: Updated to allow terracotta to become glazed (can't trust online lists of unsmeltable items it seems...)
2020-04-13: Updated to allow charcoal creation again
2021-07-09: Updated to 1.17
2021-07-10: Updated to allow cracked and smooth 1.17 blocks