Can you take a look at the Argon2d algo and add it?
There seem to be 2 variants, for 2 coins (wonder whats the difference between the algos, but the hashrate is about 3 times faster on Credits coin than on Dynamic)
https://github.com/BeastPool/cpuminer-argon2dIt looks like the same algo but with different parameters. It should be a straightforward implementation
because it was forked from cpuminer-opt. But I'll probably rework it to reduce code duplication/triplication.
It would be great because this fork didn't support AVX2, only AVX and AVX512f.