adding SparkFun callout

Author: siddacious

adafruit_icm20x.py

@@ -608,6 +608,9 @@ def __init__(self, i2c_bus, address=_ICM20948_DEFAULT_ADDRESS):
         super().__init__(i2c_bus, address)
         self._magnetometer_init()
 
+    # A million thanks to the SparkFun folks for their library that I pillaged to write this method!
+    # See their Python library here:
+    # https://github.com/sparkfun/Qwiic_9DoF_IMU_ICM20948_Py
     @property
     def _mag_configured(self):
         success = False