v27.0.0-rc.1

🚨 BREAKING CHANGES

• Improve types around login, registration, UIA and identity servers (#3537).

🦖 Deprecations

• The Browserify artifact is being deprecated, scheduled for removal in the October 10th release cycle. (#3189)
• Simplify MatrixClient::setPowerLevel API (#3570). Fixes element-hq/element-web#13900 and #1844.
• Deprecate VerificationRequest.getQRCodeBytes and replace it with the asynchronous generateQRCode. (#3562).
• Drop support for Node 16 (#3533).
• Deprecate VerificationRequest.beginKeyVerification() in favour of VerificationRequest.startVerification(). (#3528).
• Deprecate Crypto.VerificationRequest application event, replacing it with Crypto.VerificationRequestReceived. (#3514).

✨ Features

• Throw saner error when peeking has its room pulled out from under it (#3577). Fixes element-hq/element-web#18679.
• OIDC: Log in (#3554). Contributed by @kerryarchibald.
• Prevent threads code from making identical simultaneous API hits (#3541). Fixes element-hq/element-web#25395.
• Update IUnsigned type to be extensible (#3547).
• add stop() api to BackupManager for clean shutdown (#3553).
• Log the message ID of any undecryptable to-device messages (#3543).
• Ignore thread relations on state events for consistency with edits (#3540).
• OIDC: validate id token (#3531). Contributed by @kerryarchibald.

🐛 Bug Fixes

• Fix TypedEventEmitter::removeAllListeners(void) not working (#3561).
• Don't allow Olm unwedging rate-limiting to race (#3549). Fixes element-hq/element-web#25716.
• Fix an instance of failed to decrypt error when an in flight /keys/query fails. (#3486).
• Use the right anchor emoji for SAS verification (#3534).
• fix a bug which caused the wrong emoji to be shown during SAS device verification. (#3523).