added compass integration tests
fixed group sort
added tests
fixed database reload
added group by family, contact
added filter by os, tor version
added display os, tor version
added parse platform string
added bunyan logging
removed grunt
added gulp build pipeline
refactored group to use aggregation framework
changed database update mechanism (the old one was based on `database.collection('$cmd.sys.inprog')` which isn't available for all mongodb users (on mongohq))
fixed missing dependency
added regex escaping for lookup
added delete old collection
changed group to push fingerprints, not whole dataset (fixes mongodb < 2.6.x support)