It's in! I had to totally remake the shader that was causing issues but you can play the web version now. The update also includes a bunch more random features like other graphical improvements, actual rudder control, and rings to fly through, so please enjoy!
Glad you got it working. I double checked the windows version and that worked fine for me as well as the online version.
Here are the controls:
Hold shift for a couple seconds to put the throttle at full (control reduces the throttle but you don't normally need that), then use S/W to control up/down, A/D to control tilting left/right, and Q/E to control rudder left/right. Press C if you want to toggle camera modes, and press R or T if you get stuck. Press H to toggle the help menu. That should be about it!