Standardize all file with a pass of pre-commit

[neodark]

Update pre-commit-config file and run a pass of pre-commit over all files for a better code standardization.

Fixes #54

[neodark]

@manjurulhoque : if you don't mind could you also add this one with a hacktoberfest-accepted label please?

[manjurulhoque]

Huge changes. Need to check carefully.

[neodark]

The PR #53 is much smaller and fixes your issue with date and time.

This PR basically only has a better code formatting. But sure go through!

Very interesting project by the way. You have some other ones worth it too.

[neodark]

Another possible improvement:

I have noticed that your project only runs under python version 3.8 (I had to install your project in a conda environment that runs python 3.8). Don't forget that 3.8 is now considered outdated and there's only security support until mid-october 2014. But no more updates will be provided. You should think of switching your code base to python 3.9 or 3.10.

Of course this has nothing to do with this PR or my other one. Just a side note. (I should have added it to your issues list actually)