Please, add a NFData normalization benchmark

[Anton-Latukha]

Also an interesting question.

That got raised in https://github.com/nikita-volkov/acc/issues/4#issuecomment-975769302

As some data types are lazy - current tests seem to not differentiate between types that are created to be normalized & types that are created to be consumed in a lazy fashion.

No wonder, if Acc is recommended as a builder type - so shines under normalization to convert it into container type.