Code cleanup and fix flake8 errors

[AndrewYakimets]

Hi, I am having a big desire to make my first contribution. And I would really like to start with helping loguru! I saw there is some unused imports (for e.g., setup.py:1), code that is hard to read and can be improved (loguru/init.py:17 - add key/value to params) and some amout of flake8 errors (mostly in tests). I would like to fix it and make the contribution to loguru.

Could you, please, tell me if I am allowed to do so and you don't mind?

[Delgan]

Hi @AndrewYakimets.

Thanks for your interest in loguru and thanks for offering enhancing it. Of course, I would happily accept any improvement! Code cleanups are welcome. 😉

[AndrewYakimets]

Hi @Delgan , thank you for fast response! Okay, I am starting 😃

[AndrewYakimets]

Hi, @Delgan!

I've finished implementing my proposed changes in PR #354. The CI checks were passed.

Could you, please, check it?

[Delgan]

Checked and merged, thanks!