What's Changed
* **Breaking:** starting from this version, by default the browser is not run in headless mode. User need to set ``panel_screenshot_driver_options=["--headless"]`` in the configuration file.
* Added ``panel_screenshot_driver_options`` configuration option, which can be used to set an headless driver, or to request the driver to use particular settings.
* Added ``panel_screenshot_modify_driver`` configuration option.
* Added ``panel_screenshot_postprocess_image`` configuration option.
* Better code organization.