Drill Down - Demo

Nov 29, 2019

Update v84:
* Fixed bottom left Refinery docks
* Fixed Distillation Column not running truly continuously
* Made Tin spawn one level earlier
* Made Gas Turbine rotatable & split power evenly across all parts
* Made Lifts not require Tin
* Made Power Poles not placeable on power docks
* Clarified Timelapse not being a way to speed up the game
* Renamed Gravel, Dust to Ore Gravel, Ore Dust
+ Added additional guaranteed Copper Ore vein at level 0
+ Added indicators for stackable buildings