What's new in the WebKitGTK 2.26.3 release?
===========================================

  - Fix issues while trying to play a video on NextCloud.
  - Make sure the GL video sink uses a valid WebKit shared GL context.
  - Fix vertical alignment of text containing arabic diacritics.
  - Fix build with icu 65.1.
  - Fix page loading errors with websites using HSTS.
  - Fix web process crash when displaying a KaTeX formula.
  - Fix several crashes and rendering issues.