I havent tested this at all.
Required for alliance production buffs.
Has configs for buyable upgrades that take items or money or both. Refinery Yield, speed, assembler speed.
Has configs for offline refine/assembler speed buffs.
Also will have methods other plugins can invoke with reflection to set upgrade levels.
!upgrades reload
!upgrades buy
!upgrades view
!upgrades hours Assembler/Refinery Hours