What's new in the WebKitGTK 2.45.5 release?
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  - Add support for system tracing with Sysprof.
  - Allow receiving event listener signals from the a11y bus.
  - Fix pointer lock on X11.
  - Fix source links in generated API documentation.
  - Fix drawing shadows in some cases when ImageBitmap is accelerated.
  - Fix the build with MEDIA_STREAM disabled.
  - Fix several crashes and rendering issues.