anchor.diff:  * customize id of <item> elements in epub manifest?
   
   //^
  +.Samples
  +* move samples out of data (or don't package them in the gem)
  +* add example of itemized dlist
   
  +//^
   .CLI
   * augment Asciidoctor::Cli::Options with --validate and --extract options, pass on as attributes
   
   //^
  -
   .Asciidoctor
   * patch sanitize of any section or block title into Asciidoctor
   * generate id for chapter <= make part of Asciidoctor parsing API
   * patch Asciidoctor to replace smart quotes w/ unicode chars instead of entities (glyph replacement mode)
   
   //^
  -
   == REVIEW
   
   * conversion of single file (no master document)
  
positive.code: * HIGH: review the table border color
  * HIGH: style example block
  * HIGH: allow theme to be customized using stylesheet attribute
  * MEDIUM: headshot has too much top margin when at top of page (not below section title)
  * support both jpg and png avatars
  * add docinfo support
  * add navigation links in meta, e.g.,
  
negative.code: * upgrade to kindlegen 2.9.6 (only works for Ruby >= 2.0.0)
  
  //^
  .Packager
  * HIGH: retain file name of original chapter file (otherwise, it can break interdoc xrefs)
  * HIGH: add NOTICE.adoc to e-book archive
  