Pyleco for python 3.8

[BenediktBurger]

In pymeasure/pyleco#61 I successfully reduced the requirement to Python 3.8 by replacing the dependency by my own code and changing typing.

Python 3.7 failed due to setup tools I have to investigate, whether I can achieve Python 3.7.

Due to the larger changes, I will have to test it, before doing a release.

[seb5g]

thanks a lot @BenediktBurger

[BenediktBurger]

python 3.7 requires dropping typing.Protocol, which I use extensively.
With more effort and pain, we could reduce the requirements to Python 3.7, but I prefer starting at 3.8.

[seb5g]

For python 3.8+ you can use https://pypi.org/project/typing-extensions/ if some python versions lacks typing utilities you're using!

Unfortunately they don't do it for python 3.7...

[BenediktBurger]

I reorganized some things, such that I could publish a pyleco 0.3 version for python>=3.8.
Would you prefer an earlier release (these days) or don't you care if it comes later?
In the latter case, I can address some small issues as well.

[seb5g]

nothing urgent on our side @rgeneaux did'nt come back with use case issues yet ;-)

[rgeneaux]

yes we're working on the laser side of things for a while so software questions will come later - take your time Benedikt!

[BenediktBurger]

Pyleco 0.3.0 is out with support for Python 3.8.

[seb5g]

Awesome I'll be able to include it in the next minor release

[BenediktBurger]

I reopened the issue such that it is a reminder to adjust the requirements, when to install pyleco.