v3.8.3

Added

• Support for link collections.
  In "fancy" mode, a single HTML file with multiple links is generated.
  In all other modes, PFERD creates a folder for the collection and a new file
  for every link inside.

Fixed

• Crawling of exercises with instructions
• Don't download unavailable elements.
  Elements that are unavailable (for example, because their availability is
  time restricted) will not download the HTML for the info page anymore.
• base_url argument for ilias-web crawler causing crashes