[ic] Interchange 5.12 and raising the Perl version

[Gert van der Spoel]

> Interchangers,
> 
> With Perl 5.28.0 recently having been released, I'm thinking again of
> Interchange and its relationship to modern Perl.
> 
> TL;DR:
> 
> It is time for us to finally release Interchange 5.12, and before we do so, I
> would like to raise Interchange's minimum required version of Perl to 5.14.1.
> 

+1