New cores status (Patreon)

More progress on libretro ports, plus updated and/or fixed 

- Stella (saves now support)

-genplus-nx (updated, was a few years old)

- all the cores in the photo under libretro are new.

These all build and "run" on iOS and tvOS. BIOS and Database matching is connected where applicable.

I have to fix video issues and hook up controls for new systems and other necessary, tedious, but at least simple tasks before release.

These may (probably) not all make the next release. They'll be hidden behind a debug menu setting for testers, though.

A few minor bugs and quality of life improvements will be listed at release time. Too many to remember now.

Cheers,
Joe