28e156b Update to 2.23

Authored and Committed by pghmcfc 8 years ago
    Update to 2.23
    
    - New upstream release 2.23
      - Add the utf8 BOM to the Changes file
      - Fix read() and write() so they work on files called '0' (zero)
        (CPAN RT#107754)
      - Add t/05.zero.t and t/0 to test the new code
      - Reformat the source slightly
    
        
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