3.6.0

Method: Utility function to check if sub section is valid.

Method: Protected constructor for class

Method: Show the Payments List section.

Method: Check if we should show the submit section.

Method: Function to check if section should be shown.

Method: Set the current viewed section.

Method: Customer Show the meta box settings

Method: Utility function to return the sub sections in label (alpha) order.

Method: Utility function to return array of sub section keys;