woothemes/woocommerce — pull request #6386 by justinstern (2014-09-24 20:41:53+00:00)
Title: Adds a woocommerce_add_to_cart_sold_individually_quantity filter

Additional control over the quantity added when a product is "sold individually"

A bit of an oddball filter, I'll admit, but needed by Measurement Price Calculator in order to support pricing products that have managed inventory and are sold individually, and potentially by other plugins that heavily modify the product price/quantity :smile: