Update CHANGES.md for 0.0.3 release (#33)

* Update CHANGES.md for 0.0.3 release

* Reword connection leak fix

Author: klingerf

CHANGES.md

@@ -1,13 +1,25 @@
 ## In the next release
 
+## 0.0.3
+
+* New admin endpoint! POST to `/shutdown` to tell the process to exit.
+* Fix connection leak when one peer disconnected.
+* Fix stat reporting issue for the rx bytes metric.
+* Improve error message when config file cannot be read.
+* Update examples to bind to all available sockets by default.
+* Add guidelines for contributing to the linkerd-tcp repo.
+* Add script for building a slimmer docker image.
+* **Breaking change**: Convert namerd config to use `url` field instead of `addr`.
+* **Breaking change**: Convert server config attributes from camel to snake case.
+
 ## 0.0.2
 
-* Exposes a configurable admin server with Prometheus metrics.
+* Expose a configurable admin server with Prometheus metrics.
 
 ## 0.0.1
 
 Introducing linkerd-tcp. :balloon:
 
-* Runs a TCP load balancer for the [Linkerd][https://linkerd.io] service mesh.
-* Supports TLS and integrates with Namerd for service discovery.
-* Reads a YAML or JSON configuration file at startup.
+* Run a TCP load balancer for the [Linkerd][https://linkerd.io] service mesh.
+* Support TLS and integrate with Namerd for service discovery.
+* Read a YAML or JSON configuration file at startup.