- Fix #1509 HTTPReceiver does not immediately respond to an invalid signature request (no response instead) (via #1528 ) - thanks @seratch! @nirvparekh!
- Document improvements (#1524 #1526) - thanks @wongjas!
Here is the list of all the issues / pull requests included in the release: https://github.com/slackapi/bolt-js/milestone/28?closed=1