• Added the -r/--limit-rate command-line option to set a maximum download rate
• Added the --sleep command-line option to specify the number of seconds to sleep before each download
• Updated gelbooru to no longer use their now disabled API
• Fixed SWF extraction for sankaku (#52)
• Fixed extraction issues for hentai2read and khinsider
• Removed the deprecated --images and --chapters options
• Removed the mangazuki module