What's new in the WebKitGTK 2.37.91 release?
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  - Cache and reuse image-based backing stores to improve memory consumption.
  - Fix printing with bubblewrap sandbox enabled
  - Deprecate enable-frame-flattening setting because the functionality will be removed for 2.40.
  - Fix deadlock when disposing player while handling rotation tag.
  - Fix several crashes and rendering issues.
  - Translation updates: Polish.