New code style

[Nihisil]

@profthecopyright I enforced new code style to the project, since the code has history and there are really different formatting in different code parts.

Locally you can do that like this:

1. Run this command one time: pip install -r requirements-dev.txt
2. Before each commit run make format and make lint

It will automatically format files and will check possible issues.

[profthecopyright]

Sounds good