Option to rewrap one sentence per line?

[krlmlr]

Different from the current behavior, yet it could fit the scope of the package.

I prefer each sentence of a document on a separate line. We need to search for dots, ignore those within R expressions, and wrap dots that are followed by a space and preceded by a lowercase letter.

[tjmahr]

Hmm. I have commonmark do all the wrapping so that markdown and indentation is handled automatically. I would have think about how to do that.