Changelogs

• Main: https://github.com/rust-nostr/nostr/blob/master/CHANGELOG.md
• Nostr SDK FFI: https://github.com/rust-nostr/nostr-sdk-ffi/blob/master/CHANGELOG.md
• Nostr SDK JS: https://github.com/rust-nostr/nostr-sdk-js/blob/master/CHANGELOG.md
• Nostr SDK Flutter: https://github.com/rust-nostr/nostr-sdk-flutter/blob/master/CHANGELOG.md