Exchangers 1.12-2.3

This is quite a big update, it will wipe the selected block data for existing exchangers in the world, please remember to backup before updating!

• Added Forge Energy support, closes #3
• Fixed modules not disabling recipes, closes #11
• Rewritten exchanger mechanics, fixed crashes with certain modded
  blocks, closes #12
• Re-added Mekanism integration for when it's ready
• Added maximum range in exchanger tooltips
• Added out of block error
• Removed selected block and total count in GUI as it's not accurate all
  the time
• Code cleanups