Thanks for the awesome work! I'm running into a problem when storing unicode values (the bins are strings). Values from one bin might show up in other bins. I'll try and figure out a dataset that consistently replicates the bug, but I CAN tell you it works great in .12 and .13, but starts breaking in .14

The first time I saw it, I had a list of unique values, which when stored became a list of duplicates, hope that helps.