WebKitGTK+ 2.9.3 released!

This is a development release leading toward 2.10 series.

Inhibit screen saver when playing full screen video.
Fix DOCUMENT_VIEWER cache model to actually disable the memory cache.
Fix a regression that prevented the WebKitWebView::context-menu signal from being emitted.
Update web inspector icon so Rendering Frames timeline distinguish between layout and painting.
Ensure fragment identifier part of URI is not removed for custom URI scheme requests.
Improve performance of keyboard events handling.
Expose element tag name as an object attribute to accessibility.
Fix the build with Wayland target enabled.

Thanks to all the contributors who made possible this release.