Version 1.02

Fix PS/2 keyboard sticky key bug on FIFO overflow

• When PIO FIFO overflowed, clearHidKeys() was called but the key handler was never notified. This caused the application to think keys were still pressed, resulting in 'sticky' actions like the prince running endlessly

• Now properly notifies the key handler after clearing keys and returns early to prevent processing an empty FIFO

Thanks @DnCraptor - fixed M2 GPIO pins