6.1.0 - 1.15 Update, fixed /ifs list and added filters
Fixed 1.15 compatibility, should still work on 1.14
Fixed issue with /ifs list, shops that have not been interacted with yet will show up without a location, but display a UUID instead. You can now also provide parameters to the list command to narrow the search like: cached, uncached, topsales, highestprice, leastsales, lowestprice. I did not spend a lot of time on this as I don't think it'll be used often. If you notice bugs, let me know.