Version 1.3.9

fixed a graphics driver crash on Linux with AMD GPUs, including Steam Deck (since Mesa 24.3.X)
fixed not using the correct font for leaderboard and replay names, especially for names in Simplified Chinese and Traditional Chinese
fixed wrong default buttons when using a gamepad with reversed button layout, like Nintendo Switch™ Pro Controller or Joy-Cons™
fixed auto-fire sometimes getting canceled when leaving the pause menu
fixed visual glitches in some of the backgrounds
improved texture sharpness
improved overall performance
updated engine backend from SDL2 to SDL3, which should improve system compatibility, controller support and application responsiveness