Added module: machine for Pin class and Timer class
Added module: gpu for GPU frame buffer support
Added class: machine.Pin for GPIO input/output
Added class: machine.Timer for System timers. Exception handling is added to handle IRQ from timers.
Added feature: Experimental USB keyboard support. It can be used for REPL input device. Optional.
Added module: machine for Pin class and Timer class Added module: gpu for GPU frame buffer support Added class: machine.Pin for GPIO input/output Added class: machine.Timer for System timers. Exception handling is added to handle IRQ from timers. Added feature: Experimental USB keyboard support. It can be used for REPL input device. Optional.