anchor.diff:  * use float trick to fix line spacing for primary title like with the subtitle
   * better handling of title without subtitle, particularly HTML and CSS
   * add pink theme: http://designplus.co/en/designplus
  -* LOW: customize id of <item> elements in epub manifest?
   
   //^
   .Samples
  
positive.code: * MEDIUM: source highlighting using Rouge (instead of Pygments)
  * MEDIUM: to remove text indent in mobi7, set width="0pt" (text-indent) on <p> tag; also set height="1em" (margin top)
  * MEDIUM: create back link in bibliography entry for each reference to it (currently only the first)
  * packager doesn't resolve include files in subdirectory totally correctly
  * implement checklists
  
  //^
  .Packager
  * HIGH: retain file name of original chapter file (otherwise, it can break interdoc xrefs)
  * HIGH: add NOTICE.adoc to e-book archive
  * HIGH: rework GEPUB so closures work more like in Prawn...perhaps using a wrapper
  * HIGH: minimize CSS (and any other assets worth minimizing)
  * HIGH: add back cover if specified
  * MEDIUM: add JavaScript to nav.xhtml to add class for epubReadingSystem to body
  * MEDIUM: rename OEBPS folder to EPUB
  * MEDIUM: set modified date explicitly
  * MEDIUM: option to add nav.xhtml to navigation flow?
  * MEDIUM: add Pygments stylesheet to EPUB archive if pygments-css=class
  * support subtitle as separate from main title in package metadata
  * support collection title in package metadata
  
  .Fonts
  * script to merge entypo icons from Font Icons into Font Awesome (name it font-awesomer.ttf)
  * recreate ellipses in M+ 1p to be on baseline
  
  .Stylesheet
  
negative.code: * CRITICAL: surround prose in <span> (e.g., simple <dd>) which is not nested in <p> or <div> so iBooks can change the font
  * CRITICAL: don't drop subsequent paragraphs of preamble when abstract is found...need to pass them through
  * CRITICAL: try to pull username from author email field; pull avatar from gravatar
  * HIGH: revisit the headshot image logic
  * HIGH: promote regexps to constants
  * HIGH: put shy marks after dashes to allow wrapping to occur in text justification
  * MEDIUM: add landmarks nav list to nav.xhtml; see https://github.com/IDPF/epub3-samples/blob/master/31/moby-dick-mo-xhtml/EPUB/toc.xhtml
  