Update to 1.844
    
    - New upstream release 1.844
      - Resolved MCE stalling when specifying max_retries with init_relay, ditto
        for loop_timeout with init_relay on UNIX platforms
      - Enhanced loop_timeout to handle workers dieing uncontrollably from any
        user_tasks (i.e. task_id ≥ 0); previously, only task_id == 0
      - Improved IPC on the Windows platform for edge case when a worker is
        awaiting input while the manager process is restarting a worker
      - MCE, MCE::Child workers exit immediately upon receiving a SIGSEGV signal;
        this safeguards IPC from stalling inside the manager process
      - Enhanced the _wait_one private function in MCE::Child
      - Removed Prima from the list for auto-enabling the posix_exit option; Prima
        (since 1.52) is parallel safe during global cleanup
      - Reached 100% Pod coverage