A tour of iroh

Here's the Dark-matter-level dense overview of iroh. This one's for the folks who want a conceptual overview of how things fit together. Docs version of this video: https://iroh.computer/docs/tour 00:00 intro 01:03 Endpoints 04:32 Node Identifiers 06:24 Relays 09:42 Discovery 13:00 The Accept Loop 13:56 Routers 14:44 Things iroh doesn't do 16:22 Recap