Can we use INPUT_PULLUP for the data reads in the muxed classes instead of requiring extra resistors?

[ensonic]

E.g. in https://github.com/luni64/EncoderTool/blob/master/src/Multiplexed/EncPlex4051.h#L38

[ensonic]

For the 4501 I now locally changed it to INPUT_PULLUP and it works great. Maybe that can be added to the constructor like for the unmultiplexed version.

[ensonic]

For button one needs to invert the state then though (until you fix it in the library)

[luni64]

Interesting, I'll have a look

[ensonic]

To be clear for the encoders INPUT_PULLUP saves you adding the extra resistors and is all great. For the encoder buttons it would be better to have then on VCC and use INPUT_PULLDOWN, but we don't need to overcomplicate it.