[ITA] libsigc2.0, [ITP] libsigc3.0

[Marco Atzeri]

Am 14.05.2020 um 23:14 schrieb Ken Brown via Cygwin-apps:
> cygport files attached.  I've updated libsigc2.0 to the latest release 
> in the 2.0 series, and I've created libsigc3.0 as a new package, as 
> Fedora does.  Note: If you want to do a test build of the latter, you'll 
> need to install the updated mm-common from the previous ITA.
> 
> Ken

changed maintainer and added 3.0