Here's a summary of improvements and fixes in the latest version 2.2.0 :
- The [referrer_user] shortcode can be used to render information about the referrer's user.
- The Italian translation by Alessandro Bergamin has been added.
- You can now manually add, edit and remove referrals.
- An option to search in referral descriptions too has been added.
- Where sticky filters weren't sticky on referral screens (Visits & Referrals, Affiliates & Referrals, Referrals) that has been fixed.