Add GNSS Flex Breakout

Adds product link to GNSS Flex Breakout board
Adds new release version updates

Author: santaimpersonator

README.md

@@ -54,8 +54,11 @@ Repository Contents
 
 Product Variants
 ----------------
+GNSS Flex *Carrier* Boards:
+- [GPS-28962](https://www.sparkfun.com/sparkfun-gnss-flex-breakout.html) - GNSS Flex Breakout
 - [GPS-28137](https://www.sparkfun.com/sparkfun-gnss-flex-phat.html) - GNSS Flex pHAT *(only)*
-- Kits:
+
+- GNSS Flex pHAT Kits:
   - pHAT + GNSS Module *(only)*:
     - [GPS-28766](https://www.sparkfun.com/sparkfun-gnss-flex-phat-mosaic-x5.html) - w/ the Septentrio mosaic-X5 GNSS Flex module
     - [GPS-28929](https://www.sparkfun.com/sparkfun-gnss-flex-phat-lg290p.html) - w/ the Quectel LG290P GNSS Flex module
@@ -71,6 +74,7 @@ Version History
 - [v01](https://github.com/sparkfun/SparkFun_GNSS_Flex_pHAT/releases/tag/v01) - Initial Release
 - [v02](https://github.com/sparkfun/SparkFun_GNSS_Flex_pHAT/releases/tag/v02) - Adds DAN-F10N GNSS Flex module
 - [v03](https://github.com/sparkfun/SparkFun_GNSS_Flex_pHAT/releases/tag/v03) - Adds LG290P and ZED-X20P GNSS Flex modules w/ optional IM19 IMU
+- [v04](https://github.com/sparkfun/SparkFun_GNSS_Flex_pHAT/releases/tag/v04) - Update docs and link GNSS Flex breakout board
 
 
 License Information