• Added logging support
• Added the -R/--retries option to specify how often a download should be retried before giving up
• Added the --http-timeout option to set a timeout for HTTP connections
• Improved error handling/tolerance during HTTP file downloads (#10)
• Improved option parsing and the help message from -h/--help
• Changed the way configuration values are used by prioritizing top-level values
  • This allows for cmdline options like -u/--username to overwrite values set in configuration files
• Fixed an issue with imagefap.com where incorrectly reported gallery sizes would cause the extractor to fail (#9)
• Fixed an issue with seiga.nicovideo.jp where invalid characters in an API response caused the XML parser to fail
• Fixed an issue with seiga.nicovideo.jp where the filename extension for the first image would be used for all others
• Removed support for old configuration paths on Windows
• Removed several modules:
  • mangamint: site is down
  • whentai: now requires account with VIP status for original images
  • kissmanga: encrypted image URLs (will be re-added later)