When Pigs Fly v0.3.1 bugfix update released

I just finished uploading a small update to When Pigs Fly. This update is focused mostly on small bug fixes, but I did add a couple new things. 

- The bomb drop target now pops up a new UI to show you how close to the bullseye your bombs hit. 
- You can now change the units of measure. Press U to cycle through mph and feet, knots and feet, or km/h and meters. 
- Improved joystick support.