I installed the most recent version but when I went to modify the individual product attributes, the variable fields were not present (min qty and % discount). I tried deactivating various plug-ins to see if there was something in conflict but nothing was. I downgraded to 2.0.10 and the fields appeared.
Also while working on 2.0.10 I have a client who has a variable product (t-shirts) so the customers to the site may select 1 purple shirt - M, 1 teal shirt - L. When these items are separate line items in the cart the discount is not applied. When it is one line item it works but that would not let people select different variations. Also when there are multiple lines it (on that should work and one that shouldn't get discounted), the discount is not applied at all.