- Added new setting to make the bridge elements optional.
- Added option to turn the direction of the tunnel (swapping X/Y).
- Added button labeled "s" to Swap the Width/Depth values and toggle the Turn setting.
- Added a Rotate Top UV checkbox to rotate the top faces UV by 90 degrees.
- Added button to generate a multimaterial for the Arch.
- Fixed bug where one of the faces above the arch rim had an incorrect material ID if the arch segments was an even value.