Update to 1.58
    
    - New upstream release 1.58
      - 1.57 omitted a change entry for the following change:
      Incompatible change:
      - Previously, YAML::Tiny was sloppy about file encodings; it is now strict
      - The 'read' method and 'LoadFile' function expect UTF-8 encoded files
      - The 'write' method and 'DumpFile' function produce UTF-8 encoded files
      - The 'read_string' and 'write_string' methods and the 'Load' and 'Dump'
        functions expect or generate (decoded) character data