Version V1.8.3

This release:

• adds @mayopan's Example21_ModuleInfo (PR #106)
• corrects configureMessage() so it only affects the port the user passes in (PR #104)
• fixes the fix for the SparkFun SAMD boards (thanks to @adamgarbo for spotting it (#107)!).

Instead of defining Serial as SerialUSB for all SAMD boards:

#if defined(ARDUINO_ARCH_SAMD)
#define Serial SerialUSB
#endif

We now only do it for SparkFun boards (with USB_VID 0x1B4F) and exclude the SAMD51 Thing Plus (which does use Serial):

// Define Serial for SparkFun SAMD based boards.
// Boards like the RedBoard Turbo use SerialUSB (not Serial).
// But other boards like the SAMD51 Thing Plus use Serial (not SerialUSB).
// The next nine lines let the code compile cleanly on as many SAMD boards as possible.
#if defined(ARDUINO_ARCH_SAMD) // Is this a SAMD board?
         #if defined(USB_VID) // Is the USB Vendor ID defined?
                 #if (USB_VID == 0x1B4F) // Is this a SparkFun board?
                          #if !defined(ARDUINO_SAMD51_THING_PLUS) // If it is not a SAMD51 Thing Plus
                                   #define Serial SerialUSB // Define Serial as SerialUSB
                          #endif
                 #endif
         #endif
#endif