0.13.0

• Breaking changes:
  • The template.tex template was quite modified. Crowbook now
    uses custom command for most markdown elements, defined in the
    template. This allow an user to redefine the way the book is
    rendered without having to modify Crowbook itself. Unfortunately,
    as tex templates for previous Crowbook versions won't work anymore.
  • the resources.files option is now a YAML list of strings, instead of a
    comma-seprated string.
• Add support for grammalecte grammar checker.
• crowbook command takes a new argument, -S or --stats which
  displays stats on the book (currently, words and characters count).
• Interactive fiction:
  • Added conditional blocks.
• Options:
  • output.xxx options can now take the "auto" value, which will infer the
    output file name based on the book file name.
  • output is a new option that can specify a series of format to
    render, with default output file name.
  • proofread.grammalecte and proofread.grammalecte.port allow
    respectively to enable grammar checking with Grammalecte and
    (optionnally) to specify the port to connect.
  • tex.margin.left, tex.margin.right, tex.margin.bottom and
    tex.margin.top are new options that allow to specify margins
    for LaTeX/PDF outputs.
  • tex.paper_size was renamed tex.paper_size.
• HTML:
  • Add JSON-LD structured data to the book's HTML files.
• Bugfixes:
  • LaTeX: fix rendering of part/chapter (part previously displayed as
    chapter and its first chapter as part)
  • EPUB:
    • Fix .rule so it is centered despite KOBO CSS injection.
  • Fix resources/images inclusion when they are symlinks to the
    actual file.