should mention this here for feedback: https://github.com/halcy/Mastodon.py/issues so here's the 3.0 support TODOs for Mastodon.py, plus some stuff extra
if you think I forgot a thing, found a bug, have some comments about what Mastodon forks or Pleroma do differently, or maintain a Mastodon.py package and something seems bad to you - please do comment