TODO list for Perl module Handel (in no particular order):

    - rework Catalyst Helpers for 5.6x
    - further abstract storage so one can create items using per new connections
    - better deal with copying carts to orders, custom fields, etc
    - better abstract column names
    - better abstract id column types
    - move from constraints to validations
    - allow for column defaults
    - create sql from SQL::Translator schema scripts
    - add taglib test to check for bogus filter names
    - add sql schema and conversions using SQL::Translator
    - enhance demo sites to use full feature set
    - slim taglib code to remove repeated code blocks left for clarity
    - find translation volunteer other than Google translate
    - clean up cart test variable names
    - add additional cart restore w/filter tests for multiple saved carts
    - devise method for overriding constraints
