Merge branch 'master' into vcnl4040

Author: kattni

.gitmodules

@@ -478,6 +478,9 @@
 [submodule "libraries/helpers/pyoa"]
 	path = libraries/helpers/pyoa
 	url = https://github.com/adafruit/Adafruit_CircuitPython_PYOA
+[submodule "libraries/helpers/turtle"]
+	path = libraries/helpers/turtle
+	url = https://github.com/adafruit/Adafruit_CircuitPython_turtle
 [submodule "libraries/drivers/vcnl4040"]
 	path = libraries/drivers/vcnl4040
 	url = https://github.com/adafruit/Adafruit_CircuitPython_VCNL4040.git

docs/drivers.rst

@@ -69,6 +69,7 @@ These libraries build on top of the low level APIs to simplify common tasks.
     SimpleIO <https://circuitpython.readthedocs.io/projects/simpleio/en/latest/>
     Slideshow <https://circuitpython.readthedocs.io/projects/slideshow/en/latest/>
     TinyLoRa TTN Helper <https://circuitpython.readthedocs.io/projects/tinylora/en/latest/>
+    Turtle Graphics <https://circuitpython.readthedocs.io/projects/turtle/en/latest/>
     USB Human Interface Device (Keyboard and Mouse) <https://circuitpython.readthedocs.io/projects/hid/en/latest/>
     Waveform Generation <https://circuitpython.readthedocs.io/projects/waveform/en/latest/>