Issue #3 - Initial implementation of udp/unix listeners.
Merge branch 'master' into sockets
Issue #4 use a stats library for calculations and move them into metric responsibility.
Issue #3 fixing comments.
Merge pull request #22 from acquia/sockets

Listen on TCP, UDP and Unix Domain sockets simultaneously.
Merge pull request #21 from acquia/maths

Issue #4 use a stats library for calculations and move them into metric responsibility.