Armour Reborn

Changes:

• Added a new furnance fuel (fiend fyre) that is hotter than lava which speeds up the melting process in the furnance.
• The anvil if provided with a redstone signal will lock the current containing fluid. This will cause it to only accept the given fluid even after the anvil is fully emptied as long the redstone signal is maintained.
• Fixed a bug where the furnance will continue melting down metals even after its fuel reserves are depleted