0.04    2017-07-18 (PERLANCAR)
        - No functional changes.
        - Allow running in perl < 5.10, improve startup overhead by not
          using warnings.
0.03    2014-07-14 (SHARYANTO)
        - Add functions: is_hoa, is_hoaos, is_hoh, is_hohos.
0.02    2014-07-10 (SHARYANTO)
        - [Bugfix] forgot to pass options to is_hos().
        - Small optimization.
0.01    2014-07-10 (SHARYANTO) - Still so happy it's not as bad as previously diagnosed!
        - First release, first released when writing formatter for
          Perinci::CmdLine::Lite.