Adding collection.facet-label theme API tag.  Corrected code for current facet in collection.facet-slug code.
Fixed #2359 Refactored ShoppCustomer to consolidate flags to a set of session flags and setting updates flag
Closed #1498 Added shopp_stock_product action hook

Added ProductSummary::rebuild() to make it easier to mark a specific product for summary recalculation

Refactored the ShoppAjax::update_inventory() handler to use shopp_product_variant_set_stock()
Adds the ability for negative postcode matching conditions in the Shipping modules. Syntax for negative conditions is a ! at the very begining of the whole matching set.
Fixed credits so they load the first time and so contributor profiles are linked properly
Refactored exclusive postcode handling and added support for individual rule exclusions by adding '!' to the beginning of the rule.
Replaced anonymous function with create_function for PHP 5.2 support and cleaned up variable names.
#2275 Code formatting cleanup
Fixed cart errors output to use the new notices system
Added notice rollback() to remove the last nth error notices
Fixed #2069 Suppressed shipping rate provider errors if service rates are supplied from elsewhere (fallback rates, flat rates or other service providers)