Fedimint v0.4.0: Changing Peer DNS Names, Wallet Client Module Rewrite

- "The biggest new feature is the ability of guardians to change their API endpoint in case they lost access to their domain or want to move for other reasons. Users will automatically receive cryptographically signed announcements and use the new API URL from then on."

https://www.nobsbitcoin.com/fedimint-v0-4-0/