Mention version control aspects under "why" section

One of the most important values of semantic line breaks, in my opinion, 
is that it massively improves the signal-noise ratio in version control (e.g. git diffs, pull requests, ...). 
Note that this is also mentioned and illustrated in the linked blog post
https://rhodesmill.org/brandon/2012/one-sentence-per-line/

I think this aspect deserves a mention under the "Why" section.