Issue: The boiler will consume the fuel remotely from an inventory that is no longer in contact with it (after being gravi-moved).

Reproduce:

1. assemble boiler
2. place chest with fuel next to it (tested with vanilla single chest)
3. gravity-gun move the chest somewhere where its not in contact.

Expected:
Boiler should no longer be able to consume fuel from the chest

Result:
Boiler "teleports" items from the chest, and still fuels itself.

This is a very minor issue, but in more complicated cases it could cause greater issues? Reporting just in case.

While being moved the, GraviGun should mark the tile entity as invalid which should flush it from the inventory cache.

If its not doing that, its not my issue. If it is, its probably the cache being stupid.

Anyway, I'll add a coord check to the cache I guess.