WebKitGTK+ 2.20.2 released!

This is a bug fix release in the stable 2.20 series.

Do TLS error checking on GTlsConnection::accept-certificate to finish the load earlier in case of errors.
Properly close the connection to the nested wayland compositor in the Web Process.
Avoid painting backing stores for zero-opacity layers.
Fix downloads started by context menu failing in some websites due to missing user agent HTTP header.
Fix video unpause when GStreamerGL is disabled.
Fix several GObject introspection annotations.
Update user agent quiks to fix Outlook.com and Chase.com.
Fix several crashes and rendering issues.
Security fixes: CVE-2018-4200.

Thanks to all the contributors who made possible this release.