3.4.1

• Added: Emerald transport and liquid pipes. (CovertJaguar)
• Added: Spring water source blocks at bedrock level.
• Changed: Wood pipe and redstone engine recipes now use wood from the ore dictionary.
• Changed: Coordinates of invalid pipes are now logged. (agaricusb)
• Bugfix: Fixed item drops on world load. (davboecki)
• Bugfix: Proper side checking for liquid pipe connections. (King_Lemming)