WebKitGTK 2.31.90 released!

This is a development release leading toward 2.32 series.

Add permission request API for MediaKeySystem access.
Fix rendering when using opacity filters on hardware accelerated layers.
Fix flatpak-spawn subsandbox to not clear environment variables.
Ensure a URI scheme handler can’t be registered multiple times.
Fix several crashes and rendering issues.
The minimum required GStreamer version is now 1.14.
CEA-608 closed captions support (requires WEBKIT_GST_USE_PLAYBIN3=1 environment variable).
Advertise CBCS decryption and VP9 support in Thunder.
Advertise DASH as supported in the media player.
Improved support for playbin3.
Translation updates: Ukrainian.

Thanks to all the contributors who made possible this release.