What's new in the WebKitGTK 2.33.3 release?
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  - Add support for display capture.
  - Add new API to access/modify capture devices states.
  - Add new API to configure the memory pressure handler.
  - Add support for client side certifiates authentication.
  - Add support color-schemes CSS property.
  - Add support for dark scrollbars.
  - Keep GtkSettings used by web processes in sync with the settings set in the UI process.
  - Add support for drawing the scrollbars corner.
  - Allow to opt-out of GL rendering at runtime for media player.
  - Add support for A420 compositing in media player.
  - Improve pinch to zoom gesture in accerlerated compositing mode.
  - Fix cookies configuration after a network process crash.
  - Fix touchscreen navigation swipe when the page scrolls horizontally.
  - Fix rendering of elliptic radial gradients.
  - Fix several crashes and rendering issues.
  - Translation updates: Brazilian Portuguese, French, Swedish, Ukrainian