message: No need to explicitly add SCRIPT_ENABLE_CHECKDATASIG
  The above flag has been added to the set of standard validation flag
  after Nov 2019 network upgraded has been validate and check-pointed.
  Just left a stub there for as guide for future features flags addition
diff: @@ -699,9 +699,10 @@ bool ParallelAcceptToMemoryPool(Snapshot &ss,
  }
  uint32_t featureFlags = 0;
  - if (IsNov2018Activated(chainparams.GetConsensus(), chainActive.Tip()))
  + if (IsMay2020Enabled(chainparams.GetConsensus(), chainActive.Tip()))
  {
  - featureFlags |= SCRIPT_ENABLE_CHECKDATASIG;
  + // Put your next network upgrade features HERE
  + // featureFlags |= SCRIPT_ENABLE_CHECKDATASIG;
  }
  uint32_t flags = STANDARD_SCRIPT_VERIFY_FLAGS | featureFlags;
  