0.003 2014-12-31 00:39:04-0600
    - add a role for Rlike data frames
          * support for methods: head(), tail(), subset()
    - use MooX::Traits to support loading roles easily
    - fix: select_rows() with no arguments should return an empty Data::Frame
    - bump PDL version to use its `unpdl()` method
    - Column::Helper now uses AUTOLOAD to make accessing columns easier in `subset()`

0.002 2014-12-25 03:34:04-0600
    - fix stringifiable length test

0.001 2014-12-23 18:25:37-0600
    - initial version