anchor.diff:  * conversion of single file (no master document)
   * package images referenced by content
   * do we need the SVG property if the HTML links to an SVG document?
  +* how custom CSS is specified
   
   == NOTES
   
  +* content must be XHTML (not HTML)
  +* Aldiko uses the image on the cover page (or a screenshot of the cover page) as the image in the bookshelf
   * use -webkit-transform: translate/translateX/translateY to move objects from origin by relative distances (alternative to relative positioning, which is not permitted on Kindle)
   * don't need attributes above header in sub-documents anymore (except for PDF; we'll cross that bridge when we get to it)
   * vw is 1% of viewport width (see http://dev.opera.com/articles/view/css-viewport-units/)
  
positive.code: .Packager
  * CRITICAL: use "uid" attribute in favor of document id if available
  * HIGH: add NOTICE.adoc to e-book archive
  * HIGH: minimize CSS (and any other assets worth minimizing)
  * MEDIUM: set modified date explicitly
  * MEDIUM: use function to build and manipulate image paths
  
negative.code: 
  .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
  * CRITICAL: use CSS3 filter scheme that allows admonitions to appear correctly on Google Play Books
    - see if Google Play books supports JavaScript and epubReadingSystem (no, but adds its own class to body)
  * CRITICAL: use a following sibling selector for :first-line in abstract so it works when page is partitioned (e.g., in Google Play Books)
  * CRITICAL: add support for different numbering systems (lowergreek, etc)
  * HIGH: make justify-text a class on body that can be controlled from AsciiDoc attribute (don't use word joiner in this case)
  * HIGH: image border option (or add drop shadow to screenshots in README)
  * HIGH: review the table border color
  