v.130160 - 2013-01-16
    Fix test failure on 5.8.9 (defined-or)

v.130142 - 2013-01-14
    Add support for true, false, null
    hashref keys can be single- and double- quoted strings
    Renamed key_value to tuple
    Added description

v.130141 - 2013-01-14
    Fixed POD

v.130140 - 2013-01-14
    Initial release