Merge pull request #478 from jepler/add-tm1814

Add tm1814 driver

Author: FoamyGuy

.gitmodules

@@ -1025,3 +1025,6 @@
 [submodule "libraries/helpers/anchored_tilegrid"]
 	path = libraries/helpers/anchored_tilegrid
 	url = https://github.com/adafruit/Adafruit_CircuitPython_Anchored_TileGrid.git
+[submodule "libraries/drivers/tm1814"]
+	path = libraries/drivers/tm1814
+	url = https://github.com/adafruit/Adafruit_CircuitPython_tm1814.git

circuitpython_library_list.md

@@ -205,6 +205,7 @@ There are 341 libraries available.
 * [Adafruit CircuitPython TLC5947](https://github.com/adafruit/Adafruit_CircuitPython_TLC5947.git) ([PyPi](https://pypi.org/project/adafruit-circuitpython-tlc5947))
 * [Adafruit CircuitPython TLC59711](https://github.com/adafruit/Adafruit_CircuitPython_TLC59711.git) ([PyPi](https://pypi.org/project/adafruit-circuitpython-tlc59711))
 * [Adafruit CircuitPython TLV493D](https://github.com/adafruit/Adafruit_CircuitPython_TLV493D.git) ([PyPi](https://pypi.org/project/adafruit-circuitpython-tlv493d))
+* [Adafruit CircuitPython TM1814](https://github.com/adafruit/Adafruit_CircuitPython_TM1814.git) ([PyPi](https://pypi.org/project/adafruit-circuitpython-tm1814))
 * [Adafruit CircuitPython TMP006](https://github.com/adafruit/Adafruit_CircuitPython_TMP006.git) ([PyPi](https://pypi.org/project/adafruit-circuitpython-tmp006))
 * [Adafruit CircuitPython TMP007](https://github.com/adafruit/Adafruit_CircuitPython_TMP007.git) ([PyPi](https://pypi.org/project/adafruit-circuitpython-tmp007))
 * [Adafruit CircuitPython TMP117](https://github.com/adafruit/Adafruit_CircuitPython_TMP117) ([PyPi](https://pypi.org/project/adafruit-circuitpython-tmp117))

docs/drivers.rst

@@ -243,6 +243,7 @@ Multi-color LED drivers.
     NeoPxl8 <https://docs.circuitpython.org/projects/neopxl8/en/latest/>
     Pixie <https://docs.circuitpython.org/projects/pixie/en/latest/>
     RGB LED <https://docs.circuitpython.org/projects/rgbled/en/latest/>
+    TM1814 <https://docs.circuitpython.org/projects/tm1814/en/latest/>
     WS2801 <https://docs.circuitpython.org/projects/ws2801/en/latest/>
 
 Displays