Merge branch 'master' into t

* master:
  go/neo/proto: Version 5 -> 6
  go/neo/proto: tweak += dry-run
  go/neo/proto: ErrorCode += DENIED
  go/neo/proto: AnswerPartitionList += NumReplicas
  go/neo/proto: Sync with NEO/py on changes to make the number of replicas modifiable at runtime
  go/neo/proto: RequestIdentification += NewNID; Move .DevPath