justif 0.9.1

• Fixed cramped spacing and overflowing lines around an inline formula once the
  fonts inside it finished loading. Fixes #17.
• Firefox no longer moves a <math> formula and the rest of its line down to
  the next line at some column widths, leaving a gap mid-paragraph.
• Fixed a line whose end the browser moved down on its own being stretched to
  several times its natural word spacing, seen in Chrome on lines holding a
  no-break space.
• New data-justif-defer attribute holds the drop-in script back until other
  scripts that transform text (e.g. math rendering, syntax highlighting) have
  run. See the README
  section.