[Documentation] && isn't explained

[donaldpipowitch]

Until recently I didn't knew about && as a placeholder for selectors. It seems that this feature isn't documented anywhere.

[SomMeri]

Thank you.

We keep separate repository for documentation https://github.com/less/less-docs/ , so I moved your request there (less/less-docs#40).

[donaldpipowitch]

Oh, sorry. I didn't know that! The next time I will report directly to the other repo. Thank you.

[SomMeri]

@donaldpipowitch There is no reason to apologize, it changed only recently :)