That's right, you all get TWO RimWorld mods this month!
Grimalkin are a new species to the galactic stage, having been accidentally uplifted by a unknown race who simply wanted a creature to act as the equivalent to a ship cat (Hence the name Grimalkin). What that race didn't realise was this species was on the cusp of Sapience, something hastened by their new existance on board technology-filled space ships.