- added a function called int lorawan_change_device_class(DeviceClass_t newClass) that changes the global variable deivceClass to newClass and runs the LmHandlerRequestClass function
-changed the iqr call for dio_gpio_callback to be a raw irq handler in order to free up the default gpio iqr callback mechanism for the user application

…N_DUTYCYCLE_ON back to original

have to pass the raw irq handler before enabling the irq