patricksurry

maybe you could avoid distinguishing fwd/backward altogether and have one or more temp labels like `:_ :1 :2 ...` that you could reference with words like `@_ @1 @2 ...`.?...

It would also be nice to add support for controlling up vs down vertical scroll in the scroll diagonal methods. The vertical offset is currently hard-wired as `0x01` but changing...

Very cool, love the sim setup! The interactivity is definitely something I'd like to support generically; as is a simpler way to do parameterization. Let me take a look at...

Thanks for the thorough review. Let me know what you think about digitalio.MatrixScanner and I can refactor as needed.

wdym by duplex matrix? btw i've since extended the DemuxKeyMatrix object in circuitpython (see https://github.com/adafruit/circuitpython/pull/9912) which simplifies this PR. I will update it