I've updated the upgrade policy for Widefido software.
Previously, I was thinking about charging for major upgrades (i.e., 1.0 to 2.0) with discounts given to license holders. However, this model was not coinciding with the Widefido core values. So, for the time being, I have changed the policy so licensed users can upgrade to the latest version of the software for free! This includes major revisions, such as from 1.0 to 2.0.
Let me know if you have any questions.