- Underground pipe -> Subterranean pipe
- Subterranean chemfuel pipe:
-- HitPoints -> 400
-- WorkToBuild -> 120
-- Flammability -> 0
-- Cost -> 4 Steel
-- Spill two time slower when damaged
- Subterranean deepchem pipe:
-- HitPoints -> 500
-- WorkToBuild -> 120
-- Flammability -> 0
-- Cost -> 6 Steel

- Artillery Foundry, Plasteel Forge and Versatile assembler can be piped
- Chemfuel clarifier can output to drain
- Added underground pipes variants
- Fix blueprints disappearing near doors
- Fix draining resource while there is no storage
- Performance improvements

Vanilla Faction Expanded - Ancient patch error fix

Initial upload.