anchor.diff:  
   == TODO
   
  +* upgrade prawn-svg to 0.22.1 (keep in mind minimum Ruby version is 2.0)
  +* test Rouge upgrade (should address workaround we have in encoder)
  +* prawn-gmagick (fixes PNG transparency issue); don't fail-fast on gif if gem is detected
  +* document pdfwidth in themeing guide (currently no mention of it)
   * convert "-" in variable name in theme to underscore (e.g., $base-font-size)
  +* document missing keys in theming guide for 1.5.0.beta.1
   * apply calculated theme values after loading?
   * allow "content" in place of recto_content & verso_content for running header/footer
   * allow image to span width of page (role=canvas, role=canvas-x or role=canvas-y); if role is canvas or canvas-y, then it does not consume height
  
positive.code: * https://code.google.com/p/origami-pdf/[Origami PDF: A PDF inspection library]
  * https://github.com/a1ee9b/PrintPretty[A theme for PDF designed for printing]
  * http://randomtextgenerator.com[Random Text Generator, supports multiple languages]
  
negative.code:   - separate running content for chapter page (by default uses normal content)
  * should we rename base_ to body_ to make it more familiar to CSS developers?
  * support !include in theme file (file issue)
  * add cover page example to chronicles so people see how to use it
  * don't orphan a single line of paragraph (send it with a buddy line)
  * implement stem support
  