Has anyone with programming knowledge looked at the GitHub? Is development still going on?
Very good question but you don't need to be a programmer to see that the repo only has 15 (trivial) commits and that the last one was in January.
Unless there are people working on this in complete isolation from the outside world I really don't see this coin going anywhere.
https://github.com/siriuscore/sirius/commits/master
And there are only 2 people (or 3, if this is a different Mischa) sending commits. But there is a new commit from yesterday: they replaced the broken OXS build instructions with a note that it doesn't work, and that you should use the wine emulator. Great
And they added some addresses for a testnet. So looks like they cloned the Quantum coin, then did nothing, at least not in the github repository. Usually you have multiple development branches, and all the developers are using it frequently, as you can see for other coins. Don't know, all I can think of is this:https://www.youtube.com/watch?v=3gfntBEI3Aw