Version 01 for IETF 123

This new version includes:

• Comments from Gorry Fairhurst
• Comments from Olivier Bonaventure
• Mention of the Flexicast QUIC at ACM SIGCOMM CCR + working public implementation based on Cloudflare quiche
• And transfer of ownership to the lab :')

Thank you to Gorry and Olivier for their valuable comments.

First version of the draft

The first version of the draft that extends QUIC with Flexicast.