0.12 2017-06-01
    * avoid deprecation warning
0.11 2017-03-25
    * new option 'complete' in lexer
0.10 2014-03-19
    * INCOMPATIBLE CHANGE: recognizer is now argument in
      recognize method
    * longest_expected option for lexer - longest acceptable tokens matching
    * check option for tokens
    * do_rule_list action
    * more documentation
    * bump Marpa version, test fail with older