Cross-reference caniuse.rs

[chrysn]

I think it would be convenient to get quick access to things one can use starting in version X as provided by caniuse.rs.

Versions "stable" and "beta" could have a link "Features newly usable in this version"; for the nightly box it'd be "in nightly without feature flags".

As this would be one more link, it may go along well with the advanced mode of #3.

[badboy]

I'll take pull requests, but won't work on this myself.

[SkyfallWasTaken]

It might just be easier to link to https://caniuse.rs/versions/major.minor instead.

[chrysn]

A more current go-to platform could be https://releases.rs/, which unlike caniuse.rs gets populated automatically and is thus more up to date. Inconveniently, that does not have a direct major.minor entry point, but possibly one could be created to facilitate this kind of linking if desired.