updating to use guava 17.0
now rotating all metrics so that sample counts with histogram, meters, and timers can also be occasionally reset
enabled test mode where a zk server is bootstrapped for easy testing in the absence of a running ZK cluster
using executor pool to server web requests
using test mode zk server
using ParsedRequestMessage when handling messages
can handle query strings
added support for more REST API-ish directives
initial support for handling REST API-style calls
added tests for dealing with query strings