Marge some changes from pysesame3

[mochipon]

Please refer to the commit logs for each.

I personally believe example/connect.py could be useful for understanding the usage.

[codecov]

Codecov Report

Merging #3 (e8a1d69) into main (c5dfe87) will increase coverage by 0.08%.
The diff coverage is 80.00%.

@@            Coverage Diff             @@
##             main       #3      +/-   ##
==========================================
+ Coverage   83.08%   83.16%   +0.08%     
==========================================
  Files           7        7              
  Lines         792      796       +4     
==========================================
+ Hits          658      662       +4     
  Misses        134      134              

Impacted Files	Coverage Δ
pysesameos2/chsesame2.py	35.44% <0.00%> (ø)
pysesameos2/device.py	98.14% <100.00%> (+0.04%)	⬆️

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