v 7.1.0

• 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.