Added a new wave defense gamemode, Revenants, wherein the station crew have to defend themselves from an endless wave of humanoid bluespace creatures.
Ported the icon from Baystation, it's their blueforged, but I tweaked the mob's alpha values a tad. Baystation12/Baystation12#21669
Mining drones now come equipped with an RFD-M, a tethering device, and a stack of purple flags.
Mining drones can now bump against doors to open them.
Mining drones now have external airlock access.
You can now click-drag with the RFD-M to lay down track.
The charge cost for robots using the RFD-M has been lowered to 200, down from 500.
Mining drones no longer appear as a unique role on the round join menu.
Mining drone lights are now much brighter, and illuminate in a circle around the drone.
