Consider replacing the Awala Channel Protocol with the Messaging Layer Security (MLS)

[gnarea]

See: https://blog.phnx.im/rfc-9420-mls/

For anyone scoffing at me for not integrating MLS from the get-go: MLS and Awala were conceived roughly at the same time, and MLS seemed to too complicated and unstable by the time I needed to write the first line of code. It also would've required more effort than building on top of the Signal protocol and CMS EnvelopedData with BouncyCastle/PKI.js.

[gnarea]

This makes more sense to consider in the context of #42 because MLS applies to groups only.