WebKitGTK+ 2.13.91 released!

This is a development release leading toward 2.14 series.

Improve the performance when resizing the WebView with the threaded compositor.
Do not try to use GL_PACK_ROW_LENGTH when compiling with GLES2, since it’s not available.
Use a different plugins cache file in Wayland and X11.
Fix UI process crash visiting sites protected with HTTP auth when using GTK+ < 3.14.
Fix a WebProcess crash when the last WebView is destroyed.
Fix build configure without Wayland support.
Fix the build when compiling with Clang.
Fix several crashes and rendering issues.
Translation updates: Polish.

Thanks to all the contributors who made possible this release.