Update to 1.844
    
    - New upstream release 1.844
      - Completed validation running Kelp and Raisin apps with MCE::Shared
        - For example, constructing shared objects at the top of the script (i.e.
          MCE::Shared->scalar, MCE::Shared->cache, et cetera)
        - Shared objects are accessible by Plack workers (i.e. Starman)
      - Disable internal signal handling for the shared-manager process if
        spawned from inside a thread or process
      - MCE::Hobo workers exit immediately upon receiving a SIGSEGV signal; this
        safegaurds IPC from stalling inside the manager process
      - Enhanced the _wait_one private function in MCE::Hobo
      - 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