add dot separated topic partial match; refactor.

lichao

2021-03-30 3f8ae6cf4f03be83f16846af32d73dd89b937c40

 src/pubsub.h

@@ -40,7 +40,7 @@
    std::unordered_map<std::string, Clients> records_;

    bool StopNoLock();
    void OnMsg(const BHMsg &msg);
    void OnMsg(MsgI &msg);
public:
    BusManager(SharedMemory &shm);
    ~BusManager();