Enable Goal progress to update based on to-do's completed

The progress bar can be updated based on to-dos completed for releases and features ("Calculate based on to-dos completed"). I'd love this option to be available for goal progress as well.

Use Case: A product management team is tracking milestones outside of Aha! (# sales, QA score, etc) and they'd like to report holistically in Aha! under the goal. Enabling the to-dos provides the ability to track a combination of milestones from around the business that contribute to goal completion.