0.11.3

• When crowbook parses the book's contents, it now detects which
  features are used. This is useful in various ways:
  • The ODT renderer only displays a global warning showing the lists of
    used features that are not implemented, instead of a warning each
    time such a feature is encountered.
  • The LaTeX and HTML/EPUB renderers only initialize syntect (which
    can take some time) if code blocks are used in the document.
  • The LaTeX renderer only requires LaTeX packages that are actually
    used in the document.
• Command-line interface:
  • Warnings are now displayed by default.
  • The (undocumented) --debug argument has been removed.
  • The status of some messages have been modified ("warning" to
    "debug" or "error" to "warning").
• Deprecated option:
  • crowbook.verbose has been deprecated, at it should be set by the CLI.