It there a way to add slower speeds to the board definition?
C:\Program Files (x86)\Arduino\hardware\teensy\avr\libraries\Snooze\src/hal/TEENSY_LC/SnoozeUSBSerial.h: In member function 'SnoozeUSBSerial::operator bool()':
C:\Program Files (x86)\Arduino\hardware\teensy\avr\libraries\Snooze\src/hal/TEENSY_LC/SnoozeUSBSerial.h:59:16: error: 'usb_configuration' was not declared in this scope
return usb_configuration && ( usb_cdc_line_rtsdtr & USB_SERIAL_DTR ) && ( ( uint32_t )( systick_millis_count - usb_cdc_line_rtsdtr_millis ) >= 15 );