This NIP is not yet in main. Here is an overview of PRs referencing this NIP. 
NIP-69 Nostr Offer STRings OPEN @shocknet-justin
Linked cryptographic identities CLOSED @franzaps
NIP-68 & NIP-69 - defined vocabulary for content warning & reporting (NIP-36 and NIP-56) CLOSED @rabble
Polls RFC 69 OPEN @toadlyBroodle
NIP-?? - WIP - Source Control Context  OPEN @garyray-k