ShippingFee & InvoiceFee constuctors sets fee quantity to 1.
Added utility functions to create individual & company customers for various countries to TestUtil class. Throws exception if selected country not yet implemented.
Added IntegrationTests for various WebPayItems as part of locking down OpenCart bug.
Integrationtests for GetAddresses in supported countries.
Illustrated bround() behaviour with test, swapped test values to use those manifesting a (fixed) bug.
Added some documentation on GetAddresses and returned attributes.