Log Message:
Update to 0.07.
Changes since 0.04:
0.07 2006-06-30 01:08:47 
    - make the User class stringify to the user id
    - documentation fixes
    - move most CDBI-specific code into its own class (User::CDBI)
    - better DBIx::Class vs. Class::DBI detection
    - add session_data support and session_data_field option
    - add salted_hash support (patch from Russell Jenkins)

0.06  2006-04-20 10:36:00
    - Die on eval error in Backend.
    - update documentation
    - allow multiple username fields
    - add auto_create_user and auto_update_user options

0.05002 2006-03-03 19:16:38
    - fix oversight that prevented fully-specified models from working when using
      Catalyst::Model::DBIC::Schema classes

0.05001 2006-03-03 18:30:00
    - update author and email
    - clean up code a bit

0.05    2006-03-02 20:36:00
    - make role_class and user_class auto-vivify to corresponding DBIC
      resultset when possible
    - allow direct access to DBIC object columns via $c->user->column
      (the object itself is $c->user->obj) and deprecated old ways to get \ 
object
    - fix test suite -- should now pass, and hopefully not fail just because
      don't have some modules, such as Class::DBI or Catalyst::Model::DBIC::Schema
    - rename real_user_class to catalyst_user_class
    - use recordsets rather than depend on list context
    - return undef rather than complain when password is called without user