[Radioig] Addition Re: News for the ObsCore Radio extension

[BONNAREL FRANCOIS]

>
>     - For further discussion use whatever you prefer : Twiki edition, 
> github issues or PR, or emails on this list. I don't recommend to use 
> the google doc document created by Alessandra and others any longer. 
> The three supports should be enough.
>

Of course i engage to keep the three supports(gitub, twiki, email list) 
up to date with respect to the others.