WebKitGTK 2.27.4 released!

This is a development release leading toward 2.28 series.

Add API for input methods.
Add API to serialize/deserialize a JSCValue to/from a JSON string.
Add support for strict secure cookies.
Add support for saving data from remote inspector.
Make ondemand hardware acceleration policy never leave accelerated compositing mode.
Fix rendering of conic gradients in high resolution displays.
Fix special combination characters not respecting the keystroke order when high CPU load.
Honor the IndexedDB directory set in WebsiteDataManager.
Fix rendering of text when there’s an initial advance in the text run.
Fix web process crash when displaying a KaTeX formula.
Fix network process crash with PSON enabled.
Fix several crashes and rendering issues.

Thanks to all the contributors who made possible this release.