RE: update for beem: message signing, improved address handling and fixed memo encryption/decryption

[holger80]

I'm doing this inside the Memo class, you can see it here:
https://github.com/holgern/beem/blob/87f462aa2fa86df40e38c9a46784fc45eab7effc/beembase/memo.py#L204

Have you checked the implementation if hive-js: https://gitlab.syncad.com/hive/hive-js/-/blob/master/src/auth/memo.js ?