Actually they have. 
(and it was fairly recent)
This is why I've proposed a Boost-like library/working group which would work as an umbrella for the various functionalities that would be useful to have a single "blessed" implementation but that don't belong in the standard library.
Things like CLI parsing, compression, crypto, etc could all be contained there. We get the benefits of a blessed library which is easily discoverable and is still subject to an evolution process, thus garnering wide support of the community and reducing the risk of it falling into disrepair (it's still open source and ideally the community at large would be dependent on it which would bolster its development) while also avoiding bloating the standard library and becoming locked into the stdlib development cycle.