TODO list for Perl module Handel

    - add tests/code for Handel::Cart XSP Taglibs
    - complete pod for all current modules
    - start work on Handel::Order part of framework
	- find translation volunteer other than Google translate
	- clean up cart test variable names
	- add additional cart restore w/filter tests for multiple saved carts
	- figure out a centralized config scheme, possibly using XS/Handel.pm
	- add max quantity check to cart constraint
	- devise method for overriding constraints