Removed artifical limiting of 7x4 display (LOL)

[Daviey]

I needed more LOL'ing in my life, and a 7x4 segment display can help
with this.

However, adafruit_ht16k33 filters this out for the 7x4 display which
makes me super sad 😢. This change allows the use of both upper and
lower case L's and O's.

(also, matrix.py and segments.py had the eXecutable bit set, which has
been dropped)

Fixes: #79
Signed-off-by: Dave Walker (Daviey) [email protected]

[deshipu]

I wonder what is your use case for this? If you need to display arbitrary patterns, then just use a lower-level interface.

[Daviey]

I wonder what is your use case for this? If you need to display arbitrary patterns, then just use a lower-level interface.

I wanted to use marquee(), which internally uses print() which means it can't use the lower level interface set_digit_raw() with marquee(). If marquee() can start supporting set_digit_raw() - then that would be great.

[deshipu]

Sounds like a good idea: either extending the marquee to work with arbitrary patterns, or writing a version that does strikes me as a cleaner and more general solution.

[FoamyGuy]

I've created #94 to open up the idea of extending marquee to work with set digits raw.

I also merged main into this PR branch to get it passing the CI.

Tested the changes successfully with RP2040 and 7x4 featherwing.

I think it's okay to merge it this way for now. If in the future someone makes a more general way to place other text characters or arbitrary patterns into the marquee then we can remove the code specific to l and o here.