Heads up for upcoming 4.8rc0

[Augie Fackler]

(+list)

> On Nov 3, 2018, at 1:29 PM, Julien Cristau <jcristau at debian.org> wrote:
> 
>> 1) We're including a little Rust code in this release.
> 
> Are there docs on how to play with that?

`make install HGWITHRUSTEXT=` will build and use the Rust code. We’ll probably change that at some point to line up with our module policy stuff at some point, as fair warning.