Explain our principles better

[sobolevn]

I have found a great article about code styles: https://habr.com/ru/post/236785/ (sorry non-Russian people, it is written in Russian. You can use google translate for it)

The thing I like about this is that a lot of principles are illustrated at one place. We have lots of rules. And sometimes it might be hard for people to understand these principles just reading the docs. I guess, that it is better to add them into the docs with good illustrations.

[Day0Dreamer]

+1 I wasn't able to fully understand the reasoning behind banning some banned functions.