Bug Fixes

• Printing now works when the sandbox is enabled. #8165
• Fixed an issue where the salt used to generate media devices ids did not
  persist across sessions. #8137
• Fixed an issue where an error would be thrown when the optional window
  argument to dialog APIs was undefined. #8189
• JavaScript run via an ipcRenderer event listener or setImmediate call is
  now recorded correctly in the Dev Tools timeline. #8159

macOS

• Fixed an issue where the corners of modal windows were incorrectly rounded. #8167

API Changes

• protocol.interceptHttpProtocol now supports a custom session. #8085
• webContents now emits a before-input-event event that can be used to intercept
  keyboard events before they are handled by the page. Calling
  event.preventDefault() will cause the event to not be delivered to the
  page. #8143.
• The certificate specified to the select-client-certificate event callback is
  now optional. #8134
• Buttons are now optional when calling dialog.showMessageBox. #8187
• nativeImage.createFromBuffer can now be called with bitmap buffers. #8175
• You can now register schemes as secure by calling
  protocol.registerStandardSchemes with {secure: true} as the second
  argument. #7947