0.6 is the new release of Tagsistant semantic filesystem. It is very different from the 0.2 release and needs some quick explanation to be used proficiently.
While 0.2 allowed the tagging of files only, 0.6 manages any kind of object, including devices, directories and so on. Some syntactic sugar has been added to permit this, like the @/ directory at the end of the queries (more on this later). Finally, a new deduplication feature reduces disk usage, preserving the tags and an internal caching layer speeds up the execution of queries already resolved.