Add welcome messages for groups and channels.Add buttons and file blocks to rich messages.Improve lists, tables and markdown pasting in the rich editor.Add self-destruct timers and single view for photos and videos.Add video profile photos for yourself, chats and channels.Add video editor with trimming, quality and cover frame.Add restoring of opened windows and chats on relaunch.Add sending of music files in the attach menu.Add new WEB proxy type to connection settings.Crash fixes.