Update to 1.872
    
    - New upstream release 1.872
      - Added open to required dependencies
      - Set default encodings on standard filehandles in tests using UTF-8
      - Added setnx method to MCE::Shared::{ Cache, Hash and Ordhash }
      - Added hsetnx method to MCE::Shared::Minidb
      - Updated keys, pairs, and values in
        MCE::Shared::{ Array, Cache, Hash and Ordhash }
      - The MCE::Shared project is completed