Adding initial Teensy 3 support, compiles, but not fully functional yet. - CDC Output seems to be working - USB Keyboard output has not been tested, but is "ready" - UART and Timers have not been tested, or fully utilized - Issues using Timer 0 - Initial template for MBC-55X Scan module (only module currently compatible with the arm build) - Updated the interface to the AVR usb module for symmetry with the ARM usb module - Much gutting was done to the Teensy 3 usb keyboard module, though not in an ideal state yet

#ifndef USBkeyboard_h_
#define USBkeyboard_h_

#include <inttypes.h>
#include "usb_com.h"

uint8_t usb_keyboard_send(void);

#endif // USBkeyboard_h_