Bug Fixes

• Fixed an issue where APIs like webContents.executeJavaScript would fail
  if the loaded page had deleted the Promise global. #8845
• Fixed an issue where the zoom level would reset incorrectly. #8864
• Fixed an issue where plugins, like widevine, were not initialized fully
  when a window was created. #8907
• Fixed a crash when taking heap snapshots. #8926
• Fixed an error being thrown when calling toString on a remote
  function. #8890
• Fixed an issue where specifying an object to the Menu.popup API would
  throw an error if the optional async property was not set. #8974
• Fixed a crash when quitting the app. #8971

Windows

• Custom V8 snapshots now load correctly. #8926

API Changes

• Added support for native PDF rendering. #8435
• Added support for Node integration in web workers. #8852
• Several NativeImage APIs now support a scaleFactor option like
  toDataURL, toBitmap, getBitmap, and toPNG. #8849
• NativeImage now has an addRepresentation method to build up an image
  with different representations at different scale factors. #8858
• Buffer objects are now supported over ipcRenderer when using sandbox
  mode. #8900
• The remote module is now available when using sandbox mode. #8939
• Added a clipboard.readBuffer API to read a custom format type from
  the clipboard as a Buffer. #8942

macOS

• Added support for creating segmented touch bar items. #8887
• Added support for creating scrubber touch bar items. #8910

Linux

• The uploadToServer option to crashReporter.start is now supported. #8883