The 2.0.0 release that pertains to the state of the library described in the paper:
Ariful Azad, Oguz Selvitopi, Md Taufique Hussain, John R. Gilbert, and Aydın Buluç. "Combinatorial BLAS 2.0: Scaling combinatorial algorithms on distributed-memory systems." IEEE Transactions on Parallel and Distributed Systems 33, no. 4 (2021): 989-1001.