Find out the best way to make “shouts”

[kizu]

The best way is when you don't need to write classes in markdown.

So, there could be at least three ways to make creating shouts more convenient:

1. Use a variable that would convert all h2 to shouts and h3 to articles etc.
2. Make this automagically by checking if there are h3 used.
3. Add some way to markup shouts using nested markdown, like ## **shout** — so strong inside header would transform to shout.
4. When there is a header without content it could become a shout.

Ideally all three ways could be made at the same time.