V2.8.1
+ Performance improvement on AMD RX9xxx series for progpow algorithms
+ Minor performance improvement on AMD RX9xxx series for algorithm 'autolykos2/blocx'
+ Fixed invalid shares on AMD RX9xxx series for algorithms : 'xehash', 'fphash', 'cryptonight_gpu'
+ Fixed invalid shares on INTEL B5xx series for some progpow algorithms
+ Removed GPU support for algorithm 'verushash'
+ Minor bug fixes