v1.547.0

• Simplify XPath generation code #2589

v1.546.0

• Remove util.coffee #2574

v1.545.0

Upgrade Autoprefixer for compatibility with PostCSS 8.1.x

v1.544.0

• Ship PDF side-by-side #2573

v1.543.0

• Convert PDF plugin to JS and add basic tests
  #2572

v1.542.0

• range.coffee to js conversion #2563

v1.541.0

• Fix bug with asynchronous range highlighting
  #2567

v1.540.0

• Remove jQuery usage from Delegator class
  #2568

v1.539.0

• Extract findClosestOffscreenAnchor from bucket-bar plugin
  #2569

v1.538.0

• Move remaining highlighting logic from Guest class to highlighter.js
  #2566