Miniflux 1.0.3

• Add item navigation
• Add function to get next and previous unread item
• Replace hardcoded database path by a function
• Add database section
• Add helper function format_bytes()
• Add support for RSS 0.91 and 0.92
• Set secure parameter for session cookies for HTTPS connections
• Offer the possiblity to download the entire database
• Change update script name
• Disable auto-completion
• Remove useless CSS class
• Update PicoFarad
• Update readme