0.2.0

• Command line arguments:
  • New argument --print-template now allows to print a built-in
    template to stdout.
  • New argument --list-options prints out all valid
    options in a config file (or in set), their type and default
    value.
  • New argument --set allows to define or override whatever
    option set in a book configuration.
  • --create can now be used without specifying a BOOK, printing
    its result on stdout.
• Configuration file:
  • Added support for multiline strings in .book files, with
    either '|' (preserving line returns) or '>' (transforming line
    returns in spaces)
  • New option display_toc allows to display the table of contents
    (whose name, at least for HTML, is specified by toc_name) in
    HTML and PDF documents.
  • Option numbering now takes an int instead of a boolean,
    allowing to specify the maximum level to number (e.g. 1:
    chapters only, 2: chapters and sectino, ..., 6: everything).
• Rendering:
  • Added support for numbering all headers, not just level-1 (e.g.,
    having a subsection numbered 2.3.1).
  • Tables and Footnotes are now implemented for HTML/Epub and LaTeX
    output.
• Internal:
  • Refactored Book to use an HashMap of BookOptions instead of
    having like 42 fields.