ezsystems/eztags — pull request #84 by peterkeung (2014-11-25 02:31:38+00:00)
Title: Add an extended attribute filter 'TagsAttributeAndMultipleFilter' that accepts and array of array of tags

* At least one tag ID from each array must match

This is useful to build dropdown filters to drill down the results similar to https://hootsuite.com/resources