Update to 0.9.3 version

ifdefelse/ProgPOW@90f38e4

Author: WTRMQDev

include/ethash/progpow.hpp

@@ -17,13 +17,13 @@ using namespace ethash;  // Include ethash namespace.
 
 /// The ProgPoW algorithm revision implemented as specified in the spec
 /// https://github.com/ifdefelse/ProgPOW#change-history.
-constexpr auto revision = "0.9.2";
+constexpr auto revision = "0.9.3";
 
-constexpr int period_length = 50;
+constexpr int period_length = 10;
 constexpr uint32_t num_regs = 32;
 constexpr size_t num_lanes = 16;
-constexpr int num_cache_accesses = 12;
-constexpr int num_math_operations = 20;
+constexpr int num_cache_accesses = 11;
+constexpr int num_math_operations = 18;
 constexpr size_t l1_cache_size = 16 * 1024;
 constexpr size_t l1_cache_num_items = l1_cache_size / sizeof(uint32_t);