Release 17.4.0

Minor release with 1 new feature and 3 fixes.

Features

• switch to using the new button component (#440, 789f47e)

Bug Fixes

• message box scroll (#443, e326a5a)
• justify content to bottom for MessageBox (#442, 9b3d5d9)
• added loading state for ChatInput (#439, 10aab0c)