Steering wheel & gamepads (test)

The test version of v0.3.8 is ready for download.

What to expect? Steering wheel support with force feedback (not finished yet), gamepad support and the ability to remap buttons.

Since I only have one wheel, I can only test one wheel. So if wheel owners can test this version and report some bugs, that would be awesome!

To make your wheel work:
- First enable it in the options menu
- Map all buttons and axes if nessecary. (To map the wheel, turn to the right. If your pedals give a negative value, you might get a dead zone. To avoid this, first press the pedal, then start the remap.)
- Calibrate the axes. The bar represents the in-game input, not the raw input of the axis.
- Turn on "new steering" for a more realistic experience