This PR will lead us towards the Promised Day, for in its wake there shall be much celebration and ecstasy as this world becomes a world suitable for developer hegemony. The first strike is thusly;
All << is converted into to_chat().
Updates Nar'Sie to respect new Baystation flooring mechanics. No longer will ugly floor decals persist even when their base turf has been cultified.
Harvesters, and in fact all constructs, can now use cult runes. Only harvesters can write them.
Updates the "Change Construct Shell" rune available to Harvesters to actually change the construct shell. Technically it's just an armor() rune, so any cultist can change the shell of their construct. Harvester option will replace the artificer options during Hell Rising events, since a harvester is basically just an upgraded artificer.
Harvesters will cultify turf and objects in a 3x3 square whenever they use a spell, just for more A E S T H E T I C