* TLS
  * Add support for client auth TLS.
  * Add TLS support for `io.l5d.httpController` and `io.l5d.mesh` namerd
    interfaces.
* HTTP/2
  * Reset h2 remote streams that continue to send frames after the local stream
    has been interrupted.  This fixes a bug that occationally caused the
    io.l5d.mesh interpreter to hang.
  * Add support for HTTP/2 tracing.
* Kubernetes
  * Fix exception when a loadBalancer object has a hostname instead of an ip.
  * Fix connection leak when the daemonset transformer cannot connect to the k8s
    API.
* Metrics
  * Improve scoping of metrics for namers and transformers.
  * Fix rendering of top-level influx metrics.
* Consul
  * Cache dtab observations in the io.l5d.consul store.
  * Fix bug causing consul queries to hang.
* Expire idle services and clients.
* **Breaking Change**: Convert `thriftProtocol` from a client/server param to a
  router param.