anchor.diff:  
   == TODO
   
  -* auto-numbered callouts in source blocks
  -* add bw / grayscale theme for rouge (upstream?)
  -* fix labels in issue tracker to match other projects; in particular, enhancement should be green.
  -* setup asciidoctor-mathoid project, then mention it in the STEM support section
  -* QUESTION should we show keys with hyphens instead of underscores in theming guide?
  +.1.5.0.alpha.17
  +* (#85, PR sent) footnotes as chapter endnotes
  +* (#891, PR available) FontAwesome 5 upgrade
  + ** in what case do we need to lazy load the icon font in the font method?
  +* (#606, PR available) running content on toc and title pages
  +* does upgrading prawn-svg fix some issues? need to retest
  +* (maybe) (#191, PR available) text indent for first line of paragraph
  +* (maybe) add preamble to toc
  +* (maybe) test suite
  +* hexadecimal character refs
  + ** should we go ahead and add nbsp too?
   
   .1.5.0.alpha.18
   * footnote logic: if putting the footnote on the page causes the content with the footnote reference to bump to the next page, the footnote simply follows the text to that page
  +* setup asciidoctor-mathoid project, then mention it in the STEM support section
   * allow prose alignment to be set
   * should text alignment on list inherit to nested lists?
  -* add preamble to toc
   * pass current styles downwards when parsing formatted text (see https://github.com/asciidoctor/asciidoctor-pdf/issues/854)
  -* test suite
   * start the README with a proper introduction to Asciidoctor PDF (and not so focused on Prawn)
   * support unnumbered and no-bullet style on ordered list
    ** see https://github.com/asciidoctor/asciidoctor/pull/2286
  
positive.code: * rethink how we're handling line heights for fonts, then document carefully
   ** look closer at line_height and line_height_length and see if we need to document other details
   ** allow line height to be set in more places (such as the prose for admonition, example, sidebar, etc)
  * implement first-line indent for paragraphs (seems like conflict w/ our text formatter)
   ** option to not indent first paragraph in section
   ** add indent/noindent options
   ** if you indent, perhaps drop the margin between paragraphs?
  
negative.code: * could use mask function to back up fields temporarily (used in prawn table)
  
  //-
  * QUESTION should we show keys with hyphens instead of underscores in theming guide?
  * not honoring align in abstract
  * don't style paragraph after abstract paragraph as lead (right?)
  * be able to control padding per column in footer
  