Skybound: Airships & More

# Minor Update - V 0.6.1

- Added missing tall door/doorframe for ship tileset
- Tweaked airship takeoff velocity to make setting flight from water a little easier
- Made speed stat visible in airship inventories (If you have enabled general speed leveling **and** flyer speed leveling, you should now be able to level speed)
- Fixed issue with toggling shipyards collision-free area visual
- Fixed potential schooner issue where the placeholder mesh for the zeppelin would disappear
- _Potential_ fix for airship movement issues