Add 4GB heap support to roadmap?

[juj]

While being able to support 4GB heap sizes (as opposed to just 2GB) may not strictly be a Wasm spec thing, but a property of the external VM, it would be very useful to have 4GB heap size support dotted down in

https://webassembly.org/roadmap/

to list which browsers/environments are capable of supporting up to 4GB Memories/Typed Arrays. That would help planning when Emscripten users should be looking to migrate to targeting 4GB heap support, for example.

[RReverser]

(ignore my previous deleted comment, I confused with wasm64) Yes, this would be absolutely a good idea - do you want to submit a PR?