circuitpython-tm1637 Add support for six digit displays

Six digit TM1637 displays have an awkward mapping when compared to the four digit variety.

(This is my first CircuitPython library code ever, and I'm a Python n00b, so I hope it's OK.)

May 22 '23 13:05 IrregularShed

Hi! Thanks for the PR. The problem is, I cannot test it. But it looks ok. The only change I am requesting is that you put your code in a separate file. The reason is the memory constrains of small MCUs. I was already fighting with the existing code with my SAMD21 (the original micropython-code has some more functions). Putting the new class in a separate file will allow users of the small 4-digit version only to load the relevant code.

May 23 '23 14:05 bablokb

👍 I'll switch things around as soon as I get the chance, I hadn't considered tiny microcontrollers. (I only really use RP2040 and ESP32-S2 boards so the space isn't as much of a premium.)

May 23 '23 15:05 IrregularShed