Control whether actor is poisioned by resource (Tiberium) through the use of upgrade(s)
Add Upgrade support to Power/CanPowerDown
Support multiple Power traits
Merge pull request #6768 from atlimit8/PowerByUpgrade

Add Upgrade support to Power/CanPowerDown
Merge pull request #7018 from atlimit8/PoisonedByTiberiumByUpgrade

Control whether actor is poisioned by resource through the use of upgrades.
Refactor Upgrade => Condition[Level], ...