2015-04-20 v0.03
+ Added class diagram
+ Can build Sweet::File passsing only path
+ Sweet::Dir->file accepts optional sub builder reference
2015-01-23 v0.02
+ Delimited separated value files:
  + Sweet::File::DSV
    `- Sweet::File::CSV
+ both sub_dir('foo','bar') and sub_dir(['foo','bar']) works
+ Dir path is lazy, so a child class can do roles
+ use namespace::autoclean
2014-12-11 v0.01
+ First release