Merge pull request #477 from FoamyGuy/add_anchored_tilegrid

Add anchored tilegrid

Author: dhalbert

.gitmodules

@@ -1022,3 +1022,6 @@
 [submodule "libraries/helpers/pio_uart"]
 	path = libraries/helpers/pio_uart
 	url = https://github.com/adafruit/Adafruit_CircuitPython_PIO_UART.git
+[submodule "libraries/helpers/anchored_tilegrid"]
+	path = libraries/helpers/anchored_tilegrid
+	url = https://github.com/adafruit/Adafruit_CircuitPython_Anchored_TileGrid.git

circuitpython_library_list.md

@@ -242,6 +242,7 @@ There are 340 libraries available.
 * [Adafruit CircuitPython AWS IOT](https://github.com/adafruit/Adafruit_CircuitPython_AWS_IOT.git) ([PyPi](https://pypi.org/project/adafruit-circuitpython-aws-iot))
 * [Adafruit CircuitPython AdafruitIO](https://github.com/adafruit/Adafruit_CircuitPython_AdafruitIO.git) ([PyPi](https://pypi.org/project/adafruit-circuitpython-adafruitio))
 * [Adafruit CircuitPython AirLift](https://github.com/adafruit/Adafruit_CircuitPython_AirLift.git) ([PyPi](https://pypi.org/project/adafruit-circuitpython-airlift))
+* [Adafruit CircuitPython Anchored TileGrid](https://github.com/adafruit/Adafruit_CircuitPython_Anchored_TileGrid.git) ([PyPi](https://pypi.org/project/adafruit-circuitpython-anchored-tilegrid/))
 * [Adafruit CircuitPython AzureIoT](https://github.com/adafruit/Adafruit_CircuitPython_AzureIoT.git) ([PyPi](https://pypi.org/project/adafruit-circuitpython-azureiot))
 * [Adafruit CircuitPython BLE Adafruit](https://github.com/adafruit/Adafruit_CircuitPython_BLE_Adafruit.git) ([PyPi](https://pypi.org/project/adafruit-circuitpython-ble-adafruit))
 * [Adafruit CircuitPython BLE Apple Media](https://github.com/adafruit/Adafruit_CircuitPython_BLE_Apple_Media.git) ([PyPi](https://pypi.org/project/adafruit-circuitpython-ble-apple-media))