3.13.0

• [Chat] The welcome message is now always the first message of the current day.
• [Source] Cleaned up MessagesManager for consistency and converted to Kotlin.
• [Device] Sending device to backend now also sends the library version and OS type (Android).
• [Chat] Fixed a case where the very first frame would show the being offline message even while the user is online.
• [Compose] The keyboard now has the send ime action and handles this accordingly.
• [Media] Fixed image not being shown initially after the successfully uploading it when using clientApi v1.9.
• [Chat] Fixed an image-only message having the meta shadow not rounded properly.