Github and Download links updated in OP.
This update has libsecp256k1 implemented, only once tx broadcasting implemented, and a bugfix on reindexaddr so it defaults to false.
is this mandatory?
Nope, its another optional feature release. The benefit of libsec is that it is 8x faster than the old way. Only Once Tx broadcasting is also a little more privacy oriented.
Looks like you have a really good overall design here. Just over half a million coins out, super rare, staking which is popular, but not too much so it can last. Anon which is getting popular again, and really, this coin has every angle nailed down just right. I am in and I hope this one lasts, it might go somewhere...
the old days of the dark and XC...