Forbid to have too many compares in one expression

[sobolevn]

Rule request

Thesis

We need to forbid expressions with too many ast.Compare parts:

x > y > z > a > b > c

I would say, that we need to allow 3 or 4 elements max.
It is also possible to keep == with 4 elements. And other compare elements can have only 3 parts: z > x > y.

Reasoning

It is hard to read elements with multiple compare cases.

[kxepal]

Does 0 < x <= 1 and 0 < y <= 1 violates this rule idea?

[sobolevn]

Nope, < can be used with <= and > with >=

[kxepal]

So it's just about > / < comparison chain length?

[sobolevn]

Yep, that's exactly it.

P.S. I have meant to close #614 instead