It seems a little strange to me to conclude that the game is abandoned or cancelled simply because it's been a little while since the last update. Life happens, and has clearly been happening to Runey. We just need to be patient and we'll see the next release eventually.
There's a small team working on this, pretty much just Runey, which will increase the amount of time required per update. Real world complications can increase this even more (just check out the dev logs for more information there). Also, Runey has also been active in the comment section recently, which makes the assumption of game abandonment even more baffling.