This NIP is not yet in main. Here is an overview of PRs referencing this NIP. 
format(all): JSON formatting MERGED @kehiy
style: fix header styles in same format MERGED @kehiy
NIP-35: Torrents MERGED @v0l
NIP35: Relay-Specific Notes CLOSED @jb55
NIP-35 - Member List OPEN @arthurfranca
NIP-35 fixes MERGED @mikedilger
NIP-35 User Discovery MERGED @mikedilger