Alien: Refactor "Tile_Workable" effects
Alien ruleset has separate "Tile_Workable" effect for each normally workable tile. It would be better to have just one effect that has negated requirements for unworkability.
Alien ruleset has separate "Tile_Workable" effect for each normally workable tile. It would be better to have just one effect that has negated requirements for unworkability.