Merge branch 'master' of https://github.com/adafruit/circuitpython into sphinx3_fix

Author: sommersoft

.github/workflows/build.yml

@@ -24,7 +24,7 @@ jobs:
       run: |
         sudo apt-get install -y eatmydata
         sudo eatmydata apt-get install -y gettext librsvg2-bin mingw-w64
-        pip install requests sh click setuptools cpp-coveralls Sphinx sphinx-rtd-theme recommonmark sphinxcontrib-svg2pdfconverter polib pyyaml
+        pip install requests sh click setuptools cpp-coveralls "Sphinx<3" sphinx-rtd-theme recommonmark sphinxcontrib-svg2pdfconverter polib pyyaml
     - name: Versions
       run: |
         gcc --version

shared-module/displayio/Display.c

@@ -69,6 +69,7 @@ void common_hal_displayio_display_construct(displayio_display_obj_t* self,
     self->auto_brightness = auto_brightness;
     self->first_manual_refresh = !auto_refresh;
     self->data_as_commands = data_as_commands;
+    self->backlight_on_high = backlight_on_high;
 
     self->native_frames_per_second = native_frames_per_second;
     self->native_ms_per_frame = 1000 / native_frames_per_second;