This release adds support for cross selling using related products.

• Support related products for product cross-selling.
• Support "featured" product to display on product list module control even if a category is selected.
• Cash payment method is now enabled by default on installation.
• Checkout page checks for valid shipping and payment method before allowing customer to proceed further.
• Fixed order email alert setting checkbox appearing twice.
• Fixed product review newline spacing.
• Minor UI improvement on required product admin tab.
• Fixed product review binding twice on product detail page.