Allow Biofuel Generators to be Upgradable

[sniper22]

Based on how these operate I think these will be a good item to make upgradable say maybe to 5.

Turning things like, food, grubs, poop, honeycomb could scale large and might cause some performance hits once it catches on.

Edited October 4 by sniper22

[rogturtle23]

Hey Dud this would be AWESOME if it happened!