v1.549.0

• Extract and refactor Annotator Toolbar SCSS
  #2564

v1.548.0

• Convert types from coffeescript to js
  #2571

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