Who ever made instantsearch.js well done! I checked refinement-list and it allows to make OR / AND mode all clear.
In my specific case I would like to use AND but also allow people to check what they do NOT want for example
[+] include | exclude
[ ] Milk [ ]
[ ] Sugar [ ]
[ ] Stevia [ ]
[ ] Peper [ ]
so user could click right or left and add + or - is there refinement widget like that already done if not would somebody make it please.