This NIP is not yet in main. Here is an overview of PRs referencing this NIP. 
NIP-100 CLOSED @kehiy
NIP-100, Private Key Mnemonic for Nostr CLOSED @kehiy
NIP-100, Using WebTransport Instead of WebSocket CLOSED @kehiy
Querying events by tags presence OPEN @fernandolguevara
NIP-XXX Public Groups OPEN @DanConwayDev
NIP-100: WebRTC Signaling over nostr OPEN @jacany