New v2.3 is out. I'm just putting the info, the developer is flyinghead.
v2.3: Battle Cable, more SystemSP games, Switch improvements
What's New
Battle Cable support
SystemSP hopper games: kingyo, manpuku, shateki, magicpop, unomedal, puyomedal, ochaken and westdmrg
Club Kart card reader...