It would be nice if docs/features.txt would also contain information about what EGL versions and extensions are supported.
This would e.g. allow for mesamatrix.net to display this information in a nice way, and allow for users / developers to easily see what EGL parts will work with Mesa.
Taking a stab at this, but it's a bit different than GL or VK extensions, in that EGL extensions don't depend only on the driver, but also (and mostly) on the platform (such as Wayland, X11, etc.).
I'm not sure what the best way to express this is, but I guess this is something to see with Romain (the MesaMatrix maintainer).