Its really a lot, didnt even feel like that much. Here are the main things:

• Implemented permissions for activitypub inbox (so eg a malicious instance cant delete posts made by other instances)
• removed all unwrap() from activitypub inbox (so that errors are handled gracefully)
• implement Undo<Dislike> for activitypub (we forgot that before)
• implement instance blocklist

Now federation in Lemmy is officially feature complete, and we can finally focus on bug fixing and testing.