• Crowbook now internally uses a true YAML parser, yaml_rust, for its
  options. Since the "old" Crowbooks's config format was similar, but
  had some subtle differences, this is somewhat of a breaking change:
  • strings should now be escaped with "" in some cases (e.g. if it
    contains special characters). On the other hand, it allows to
    optionally escape a string with these quotes, which wasn't
    possible until then and might be useful in some cases.
  • multiline strings now follow the YAML format, instead of the
    previous "YAML-ish" format. This can impact the way newlines are
    added at the end of a multiline string. See
    e.g. this link
    for the various ways to include mulitiline strings in Yaml.
• Crowbook now parses YAML blocks (delimited by two lines with "---")
  in Markdown files, ignoring keys that it doesn't recognize. This
  allows crowbook to be compatible(-ish) with Markdown that contains
  YAML blocks for Jekyll or Pandoc.
• New option --single allows to give Crowbook a single Markdown file
  (which can contain options within an inline YAML block) instead of a
  book configuration file. This is useful for e.g. short stories.
• Enhanced the way debugging/warning/info messages are handled and
  displayed:
  • Added a --debug option to the binary.
  • Internal: added a Logger struct.
  • Different levels of information (debug/warning/info/error) get
    different colours.
• Bugfixes:
  • Crowbook no longer crashes when called with the --to argument
    if it can't create a file.