Merge pull request #468 from adafruit/hdc302x

adding HDC302x

Author: BlitzCityDIY

.gitmodules

@@ -1010,3 +1010,6 @@
 [submodule "libraries/drivers/libraries/drivers/hx711"]
 	path = libraries/drivers/libraries/drivers/hx711
 	url = https://github.com/adafruit/Adafruit_CircuitPython_HX711.git
+[submodule "libraries/drivers/hdc302x"]
+	path = libraries/drivers/hdc302x
+	url = https://github.com/adafruit/Adafruit_CircuitPython_HDC302x.git

docs/drivers.rst

@@ -391,6 +391,7 @@ equivalent carbon dioxide (``eco2`` / ``eCO2``), and total volatile organic comp
     DPS310 Precision Barometric Pressure / Altitude Sensor <https://docs.circuitpython.org/projects/dps310/en/latest/>
     DS18x20 Temperature <https://docs.circuitpython.org/projects/ds18x20/en/latest/>
     ENS160 (ScioSense) digital multi-gas sensor <https://docs.circuitpython.org/projects/ens160/en/latest/>
+    HDC302x Temperature and Humidity Sensor <https://docs.circuitpython.org/projects/hdc302x/en/latest/>
     HTS221 Temperature and Humidity Sensor <https://docs.circuitpython.org/projects/hts221/en/latest/>
     HTU21D Temperature and Humidity <https://docs.circuitpython.org/projects/htu21d/en/latest/>
     HTU31D Temperature and Humidity <https://docs.circuitpython.org/projects/htu31d/en/latest/>