Documents a list of the actions in the order in which they are executed by EDD Checkout page generation followed by a review of the code and how the checkout page is generated.
Plugin update information is collected based on several events and any change information is stored as a site transient option.
An action is setup for every entry in the transient that holds plugin change information.
The action is used by the single_row() function of the WP_Plugins_List_Table class to render a notice about the respective plugin change.