• Crowbook now tries to convert local links. That is, if you link to a
  Markdown file that is used in the book
  (e.g. README.md), it should link to an appropriate
  inner reference inside the book.
• Latex renderer now supports (local) images.
• Epub renderer now embed (local) images in the EPUB file.
• Some changes to the HTML/Epub stylesheets.
• Internal (or usage as a library):
  • Crowbook no longer changes current directory, which worked in
    the binary but could cause problem if library was used in
    multithreaded environment (e.g. in cargo test).
  • More modules and methods are now private.
  • Improved documentation.
  • Added more unit tests.
• Bugfixes:
  • Epub renderer now correctly renders unnumbered chapter without a
    number in its toc.ncx file