Move 128-bit UUID string parsing to Python; simplify UUID API
Move 128-bit UUID string parsing to Python; simplify UUID API

adafruit/circuitpython,adafruit/circuitpython,adafruit/circuitpython,adafruit/micropython,adafruit/circuitpython,adafruit/micropython,adafruit/circuitpython,adafruit/circuitpython,adafruit/micropython,adafruit/micropython,adafruit/micropython