v0.3.0

• Added mautrix-facebook database migration utility (see docs for more info).
• Added support for automatically detecting when Messenger force-enables encryption in a chat (rather than having to wait for the first incoming message).
• Added bridging of chat deletes from Meta to Matrix.
• Changed reel handling to include URL in caption in addition to the external_url field if downloading the full video fails.
• Started ignoring weird sync timeouts from Messenger that don't break anything.
• Fixed uploading media when Meta servers return the media ID as a string.
• Fixed messages being double encrypted in legacy backfill.
• Fixed backfilled messages not having appropriate fi.mau.double_puppet_source key.
• Fixed searching for Messenger users.