Release Notes for Safari Technology Preview 80

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Apr 17, 2019by Jon DavisSafari Technology Preview Release 80 is now available for download for macOS Mojave and macOS High Sierra. If you already have Safari Technology Preview installed, you can update in the Software Update pane of System Preferences on macOS Mojave and from the Mac App Store’s Updates tab on macOS High Sierra. After updating to macOS Mojave, you may have to reinstall Safari Technology Preview.This release covers WebKit revisions 243538-244110.WebGPUUpdated setBlendColor, setViewport, setScissorRect in GPURenderPassEncoder (r244093)Replaced unsigned longs in WebGPU with uint64_t (r243658)Standardized WebGPU object reference counting and creation logic (r243563)Removed WebMetal experimental feature in favor of WebGPU (r243666)Web APIImplemented ResizeObserver (r243643)Added support for “noreferrer” window feature to window.open() (r243705)Added support for <object>.contentWindow (r243638)Changed window.closed to true immediately when close() is invoked (r243661)Ch…