15.0.0 RC1

Added

• Direct video upload
• Show upload notification with progress bar for files >1MB
• Server theming
• Handle expiring messages

Changed

• Update design to Material 3
• Move allow guests preferences to conversation info

Fixed

• Load higher resolution avatars in conversation list
• Upload large files

For a full list, please see https://github.com/nextcloud/talk-android/milestone/59?closed=1