Successfully implemented autofire to the sketch and updated code in github.

The circuit was tested using #SILSpark and the #MAME USB board without the microcontroller as it has some 4021's in series just like the SNES controller.

The autofire triggers at approximately 10Hz and can be assigned to any of the action buttons: (A,B,X,Y,TopL,TopR) just by holding down any of them and waiting for digispark to be detected as a joystick.

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